{"id":1032,"date":"2024-10-17T08:38:49","date_gmt":"2024-10-17T08:38:49","guid":{"rendered":"https:\/\/blue16.cn\/?p=1032"},"modified":"2024-10-18T17:29:02","modified_gmt":"2024-10-18T17:29:02","slug":"c%e8%af%ad%e8%a8%80%e4%b8%ad%e7%9a%84%e6%95%b0%e7%bb%84%e3%80%81%e5%ad%97%e7%ac%a6%e4%b8%b2%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/blue16.cn\/index.php\/2024\/10\/17\/1032\/","title":{"rendered":"C\u8bed\u8a00\u4e2d\u7684\u6307\u9488\u3001\u6570\u7ec4\u4e0e\u5b57\u7b26\u4e32\u8be6\u89e3"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u7b80\u4ecb<\/h2>\n\n\n\n<p>\u8fd9\u4e00\u90e8\u5206\uff0c\u662fC\u8bed\u8a00\u7684<strong>\u91cd\u4e2d\u4e4b\u91cd<\/strong>\u3002\u5b66\u4e60\u5b8cC\u8bed\u8a00\u4e4b\u540e\uff0c<strong>\u61c2\u5f97\u539f\u7406<\/strong>\u6bd4\u8bb0\u5f97\u4f4f\u600e\u4e48\u5199\u4ee3\u7801\u66f4\u91cd\u8981\u3002\u56e0\u4e3a\u540e\u9762\u5199\u4ee3\u7801\u5f88\u5c11\u9047\u5230C\u8bed\u8a00\uff08\u76ee\u524d\u7528\u5230C\u7684\u5730\u65b9\u662f\u673a\u5668\u4eba\u7535\u63a7\u4ee3\u7801\u7f16\u5199\uff09\u3002\u4f46\u662f\u539f\u7406\u662f\u4f60\u7cbe\u901aC++\u3001Java\u7b49\u7684\u57fa\u7840\u3002<\/p>\n\n\n\n<p>\u8fd9\u4e9b\u5185\u5bb9\uff0c\u5982\u679c\u4eca\u5929\u4e0d\u8bb2\u6211\u771f\u7684\u4e5f\u4e0d\u4f1a\u53bb\u7ec6\u770b\uff0c\u4e5f\u7b97\u4e00\u8d77\u8fdb\u6b65\u4e86\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u4e9b\u524d\u7f6e\u77e5\u8bc6<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b58\u50a8\u5206\u7c7b<\/h3>\n\n\n\n<p>\u901f\u5ea6\u6392\u5e8f\uff1a\u5bc4\u5b58\u5668\uff08register\uff09\u3001L1\u3001L2\u3001L3\uff08CPU\u4e09\u7ea7\u7f13\u5b58\uff09\u3001\u5185\u5b58\u3001\u5916\u5b58\uff08\u56fa\u6001\uff09<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b58\u50a8\u5355\u4f4d<\/h3>\n\n\n\n<p>\u6700\u5c0f\u7684\u5b58\u50a8\u5355\u4f4d\uff1a<strong>\u6bd4\u7279<\/strong>\uff08bit\uff09\uff0c\u8868\u793a\u4e00\u4e2a\u4e8c\u8fdb\u5236\u4f4d<\/p>\n\n\n\n<p>\u89c4\u5b9a\uff1a<strong>1\u4e2a\u5b57\u8282\u75318\u4e2a\u6bd4\u7279\u4f4d\u8868\u793a<\/strong>\uff0c\u539f\u56e0\u548c\u5386\u53f2\u53d1\u5c55\u6709\u5173\u7cfb\uff0c\u8fd9\u4e5f\u662fchar\u7c7b\u578b\u7531\u6765\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5728\u8ba1\u7b97\u673a\u79d1\u5b66\u53d1\u5c55\u7684\u65e9\u671f\uff0c8\u4f4d\uff08bit\uff09\u88ab\u9009\u4e3a\u5904\u7406\u5b57\u7b26\u7684\u5408\u9002\u5927\u5c0f\u3002\u5f53\u65f6\uff0c\u5927\u591a\u6570\u8ba1\u7b97\u673a\u7cfb\u7edf\u662f\u57fa\u4e8e8\u4f4d\u7684\uff0c\u56e0\u4e3a8\u4f4d\u8db3\u4ee5\u8868\u793a\u6240\u6709\u7684\u82f1\u6587\u5b57\u6bcd\uff08\u5927\u5199\u548c\u5c0f\u5199\uff09\u3001\u6570\u5b57\u3001\u4ee5\u53ca\u5176\u4ed6\u5e38\u7528\u7684\u7b26\u53f7\uff08\u5982\u6807\u70b9\u7b26\u53f7\uff09\uff0c\u8fd9\u4e9b\u5b57\u7b26\u96c6\u540e\u6765\u88ab\u79f0\u4e3aASCII\u7801\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u4f4d\uff1a\u82f1\u6587\u540d\u79f0\u53eb\u505a&#8221;bit&#8221;\uff0c\u8868\u793a<strong>\u4e00\u4e2a\u4e8c\u8fdb\u5236\u4f4d<\/strong>\u300232\u4f4d\u5c31\u662f\u752832\u4e2abit\u8868\u793a\u5185\u5b58\u5730\u5740\uff0c64\u4f4d\u5c31\u662f\u752864\u4e2abit\u8868\u793a\u5185\u5b58\u5730\u5740\u3002\u56e0\u6b64\u53ef\u4ee5\u7b80\u5355\u7406\u89e3\u4e3a\uff1a&#8221;\u4f4d\u6570=\u5bfb\u5740\u80fd\u529b&#8221;\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5185\u5b58\u5730\u5740<\/h3>\n\n\n\n<p>\u64cd\u4f5c\u7cfb\u7edf\u4e3a\u4e86\u7ba1\u7406\u5185\u5b58\uff0c\u5c06\u5185\u5b58\u6bcf\u4e00\u4e2a\u5b57\u8282\u7f16\u4e0a\u53f7\uff0c\u8fd9\u6837\u6bcf\u4e00\u4e2a\u53f7\u7801\u6211\u4eec\u79f0\u4e3a<strong>\u5185\u5b58\u5730\u5740<\/strong>\u3002<\/p>\n\n\n\n<p>\u5185\u5b58\u5730\u5740=\u95e8\u724c\u53f7\uff1a\u4e5f\u662f\u4e00\u4e2a\u6574\u6570\uff08\u6bd4\u59820001\u30010002\u2026\u2026\uff09\uff0c\u8fd9\u4e2a\u6574\u6570\u6709\u591a\u5c11\u5c31\u8868\u793a<strong>\u64cd\u4f5c\u7cfb\u7edf\u80fd\u7ba1\u7406\u591a\u5c11\u5185\u5b58<\/strong>\u3002<\/p>\n\n\n\n<p>\u4e3a\u4e86<strong>\u65b9\u4fbf\u8868\u793a<\/strong>\uff08\u5341\u8fdb\u5236\u592a\u957f\u4e86\uff09\uff0c\u6211\u4eec\u60ef\u7528<strong>\u5341\u516d\u8fdb\u5236<\/strong>\u8868\u793a\u5185\u5b58\u5730\u5740\uff0c\u4f8b\u5982\u201d0x5FFE8C\u201c\uff1a0x\u8868\u793a\u8fd9\u662f\u4e2a\u5341\u516d\u8fdb\u5236\u7684\u6570\u5b57\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">32\u4f4d\u4e0e64\u4f4d<\/h3>\n\n\n\n<p>\u5185\u5b58\u5730\u5740\u7531\u6574\u6570\u8868\u793a\uff0c\u90a3\u8fd9\u4e2a\u6574\u6570\u6709\u6ca1\u6709\u6700\u5927\u4e0a\u9650\u5462\uff1f\u5b9e\u9645\u4e0a\uff0c\u8fd9\u4e2a\u4e0a\u9650\u5c31\u662f\u8ba1\u7b97\u673a\u80fd\u7ba1\u7406\u7684\u6700\u5927\u5185\u5b58\u3002\u8981\u627e\u5230\u8fd9\u4e2a\u4e0a\u9650\uff0c\u5176\u5b9e\u6211\u4eec\u53ea\u9700\u8981\u77e5\u9053\u8ba1\u7b97\u673a\u80fd\u591f\u8868\u793a\u7684\u6700\u5927\u6574\u6570\u5c31\u884c\u4e86\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u4e24\u8005\u6700\u5927\u652f\u6301\u5185\u5b58<\/h4>\n\n\n\n<p>\u77e5\u9053\u4e86\u4f4d\u7684\u6982\u5ff5\uff0c\u5c31\u53ef\u4ee5\u4f5c\u51fa\u5982\u4e0b\u8ba1\u7b97\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>32\u4f4d\uff1a\u53ef\u4ee5\u5bfb\u57402<sup>32<\/sup>\u4e2a\u4e0d\u540c\u7684\u5730\u5740\uff0c\u53734GB\u5927\u5c0f\u7684\u5185\u5b58\u3002<\/li>\n\n\n\n<li>64\u4f4d\uff1a\u53ef\u4ee5\u5bfb\u57402<sup>64<\/sup>\u4e2a\u5185\u5b58\u5730\u5740\uff0c\u537316EB\uff081EB = 1024PB\uff0c1PB=1024TB\uff0c1TB=1024GB\uff09\u7684\u5185\u5b58\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u4e00\u4e9b\u4fd7\u79f0<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>x86\uff1ax86\u621680&#215;86\u662f\u82f1\u7279\u5c14Intel\u9996\u5148\u5f00\u53d1\u5236\u9020\u7684\u4e00\u79cd\u5fae\u5904\u7406\u5668\u4f53\u7cfb\u7ed3\u6784\u7684\u6cdb\u79f0\uff0c\u4e3a32\u4f4d\u7cfb\u7edf\uff0c\u56e0\u6b64\u4e00\u822c\u5728\u4f5c\u4e3a32\u4f4d\u7cfb\u7edf\u7684\u4ee3\u540d\u8bcd\u3002<\/li>\n\n\n\n<li>amd64\uff1ax64\u4e8e1999\u5e74\u7531AMD\u8bbe\u8ba1\uff0cAMD\u9996\u6b21\u516c\u5f0064\u4f4d\u96c6\u4ee5\u6269\u5c55\u7ed9x86\uff0c\u79f0\u4e3a\u201cAMD64\u201d\uff0c\u56e0\u6b64\u4e00\u822c\u4f5c\u4e3a64\u4f4d\u7cfb\u7edf\u7684\u4ee3\u540d\u8bcd\u3002<\/li>\n\n\n\n<li><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">C\u8bed\u8a00\u5185\u5b58\u6a21\u578b<\/h2>\n\n\n\n<p>C\/C++\u548cJava\u7684\u533a\u522b\uff1aC\/C++\u53ef\u4ee5\u76f4\u63a5\u64cd\u4f5c\u7cfb\u7edf\u5185\u5b58\u3001\u624b\u52a8\u56de\u6536\u3001\u624b\u52a8\u91ca\u653e\u5185\u5b58\uff0cJava\uff1a\u4e0d\u80fd\u76f4\u63a5\u64cd\u4f5c\u7cfb\u7edf\u5185\u5b58\uff08Java\u4ee3\u7801\u8fd0\u884c\u5728JVM\u4e2d\uff0cJava Virtual Machine\uff09\uff0c\u81ea\u52a8\u7ba1\u7406\u5185\u5b58<\/p>\n\n\n\n<p>Tips\uff1a\u91cd\u70b9\u638c\u63e1<strong>\u5806\u533a<\/strong>\u3001<strong>\u6808\u533a<\/strong>\u3002\u8fd9\u4e00\u90e8\u5206\u5230\u6570\u636e\u7ed3\u6784\u4f60\u4eec\u4f1a\u5b66\uff0c\u8c01\u5148\u5b66\u5230\u8c01\u8584\u7eb1\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6808\u533a<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u5b9a\u4e49<\/h4>\n\n\n\n<p>\u5b58\u653e\u51fd\u6570\u7684\u53c2\u6570\u503c\u3001\u5c40\u90e8\u53d8\u91cf\u7b49\uff0c<strong>\u7531\u7f16\u8bd1\u5668\u81ea\u52a8\u5206\u914d\u548c\u91ca\u653e<\/strong>\uff0c\u901a\u5e38\u5728\u51fd\u6570\u6267\u884c\u5b8c\u540e\u5c31\u91ca\u653e\u4e86\uff0c\u5176\u64cd\u4f5c\u65b9\u5f0f\u7c7b\u4f3c\u4e8e\u6570\u636e\u7ed3\u6784\u4e2d\u7684<strong>\u6808<\/strong>\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u5e95\u5c42\u5b9e\u73b0<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e00\u6bb5<strong>\u8fde\u7eed\u7684<\/strong>\u5b58\u50a8\u7a7a\u95f4<\/li>\n\n\n\n<li>\u6570\u636e\u7ed3\u6784\u7684\u6808\uff08\u6570\u7ec4\u5b9e\u73b0\u65b9\u5f0f\uff09<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u58f0\u660e\u65b9\u6cd5<\/h4>\n\n\n\n<p>\u7701\u6d41\uff1a\u4f60\u4ee3\u7801\u4e2d<strong>\u6ca1\u6709\u6307\u9488\u7684\u53d8\u91cf<\/strong>\u3001<strong>\u5b9a\u957f\u7684\u6570\u7ec4<\/strong>\u5c31\u662f\u4f4d\u4e8e\u6808\u533a\u7684\uff0c\u5982\u4e0b\u4ee3\u7801\u6240\u793a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int num = 20;\nint nums&#91;20];<\/code><\/pre>\n\n\n\n<p>\u4e0a\u9762\u8fd9\u4e24\u79cd\u65b9\u5f0f\u58f0\u660e\u7684\u53d8\u91cf\u5b58\u50a8\u7684\u4f4d\u7f6e\u5c31\u5728\u6808\u533a\uff0c\u4e3a\u4ec0\u4e48\uff1f\u56e0\u4e3a<strong>\u5927\u5c0f\u662f\u56fa\u5b9a\u7684<\/strong>\uff0c<strong>\u8fd0\u884c\u65f6\u65e0\u6cd5\u6539\u53d8<\/strong>\uff0c\u7f16\u8bd1\u5668\u5728\u7f16\u8bd1\u7684\u65f6\u5019\u5c31\u786e\u5b9a\u4e86\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u7279\u70b9<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9759\u6001\uff1a\u5728\u6808\u533a\u7533\u8bf7\u7a7a\u95f4\u7684\u53d8\u91cf\u90fd\u662f\u9884\u5148\u7531\u5f00\u53d1\u8005\u8bbe\u5b9a\u597d\u5927\u5c0f\u7684\uff0c\u7f16\u8bd1\u5668\u5206\u914d\uff0c<strong>\u7a0b\u5e8f\u8fd0\u884c\u65f6\u65e0\u6cd5\u6539\u53d8<\/strong>\u3002<\/li>\n\n\n\n<li>\u5feb\u901f\uff1a\u5e95\u5c42\u5b9e\u73b0\u4e3a\u6570\u636e\u7ed3\u6784\u7684\u6808\uff0c\u7c7b\u4f3c\u4e8e\u53d7\u9650\u5236\u7684\u6570\u7ec4\uff0c\u7531CPU\u76f4\u63a5\u7ba1\u7406\uff0c\u975e\u5e38\u9002\u5408\u6570\u636e\u7684\u5feb\u901f\u8bfb\u5199\uff08\u4f8b\u5982\u51fd\u6570\u7684<strong>\u8c03\u7528\u6808<\/strong>\u4e5f\u662f\u4e00\u4e2a\u9053\u7406\uff09<\/li>\n\n\n\n<li>\u5bb9\u91cf\u5c0f\uff1a\u6808\u533a\u7a7a\u95f4\u975e\u5e38\u5c0f\u8fc7\u5927\u4f1a\u53d1\u751f\u6808\u6ea2\u51fa\uff0c\u5e38\u89c1\u9519\u8bef\u4e3a\uff1a\u6bb5\u9519\u8bef\uff08segmentation fault\uff09\u6216\u8005\u662f\u7f13\u51b2\u533a\u6ea2\u51fa\uff08Buffer overflow\uff09<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u5806\u533a<\/h3>\n\n\n\n<p>\u5c31\u662f\u901a\u8fc7new\u3001malloc\u3001realloc\u5206\u914d\u7684\u5185\u5b58\u5757\uff0c\u7f16\u8bd1\u5668\u4e0d\u4f1a\u8d1f\u8d23\u5b83\u4eec\u7684\u91ca\u653e\u5de5\u4f5c\uff0c\u9700\u8981\u7528\u7a0b\u5e8f\u533a\u91ca\u653e\u3002\u5206\u914d\u65b9\u5f0f\u7c7b\u4f3c\u4e8e\u6570\u636e\u7ed3\u6784\u4e2d\u7684\u94fe\u8868\u3002\u201c\u5185\u5b58\u6cc4\u6f0f\u201d\u901a\u5e38\u8bf4\u7684\u5c31\u662f\u5806\u533a\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;stdlib.h&gt;\nint* ptr = (int*)malloc(sizeof(int) * number_of_elements);\nif (ptr == NULL) {\n    \/\/ \u5904\u7406\u5185\u5b58\u5206\u914d\u5931\u8d25\u7684\u60c5\u51b5\n    exit(EXIT_FAILURE);\n}\n\/\/ \u4f7f\u7528\u5206\u914d\u7684\u5185\u5b58\n\/\/ \u7528\u5b8c\u540e\u8bb0\u5f97\u91ca\u653e\u5185\u5b58\nfree(ptr);<\/code><\/pre>\n\n\n\n<p>\u5806\u533a\u7684\u7279\u70b9\uff1a\u6392\u5e8f\u4e8c\u53c9\u6811\u3001\u94fe\u8868\u5b58\u50a8\uff08\u9ad8\u6548\u5229\u7528\u7a7a\u95f4\u3001\u4f46\u662f\u8bfb\u53d6\u901f\u5ea6\u6ee1\uff08\u9700\u8981\u5bfb\u5740\uff09\u3001\u6d88\u8017\u5185\u5b58\u591a\uff08\u9700\u8981\u5b58\u50a8\u6bcf\u4e00\u4e2a\u5143\u7d20\u7684\u5185\u5b58\u5730\u5740\uff09\uff09<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u9759\u6001\u533a<\/h3>\n\n\n\n<p>\u5168\u5c40\u53d8\u91cf\u548c\u9759\u6001\u53d8\u91cf\u7684\u5b58\u50a8\u662f\u653e\u5728\u4e00\u5757\u7684\uff0c\u521d\u59cb\u5316\u7684\u5168\u5c40\u53d8\u91cf\u548c\u9759\u6001\u53d8\u91cf\u5728\u4e00\u5757\u533a\u57df\uff0c\u672a\u521d\u59cb\u5316\u7684\u5168\u5c40\u53d8\u91cf\u548c\u672a\u521d\u59cb\u5316\u7684\u9759\u6001\u53d8\u91cf\u5728\u76f8\u90bb\u7684\u53e6\u4e00\u5757\u533a\u57df\u3002\u7a0b\u5e8f\u7ed3\u675f\u540e\uff0c\u7531\u7cfb\u7edf\u91ca\u653e\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5e38\u91cf\u533a<\/h3>\n\n\n\n<p>\u5e38\u91cf\u5b58\u50a8\u5728\u8fd9\u91cc\uff0c\u4e0d\u5141\u8bb8\u4fee\u6539\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4ee3\u7801\u533a<\/h3>\n\n\n\n<p>\u987e\u540d\u601d\u4e49\uff0c\u5b58\u653e\u4ee3\u7801\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6307\u9488\u4e0e\u53d8\u91cf<\/h2>\n\n\n\n<p>\u5f88\u591a\u4eba\u4f1a\u8bf4\uff0c\u6307\u9488\u5c31\u662f\u5185\u5b58\u5730\u5740\uff0c\u5176\u5b9e\u6211\u4e4b\u524d\u4e5f\u662f\u8fd9\u4e48\u7406\u89e3\u7684\uff0c\u5b9e\u9645\u4e0a\u662f\u9519\u7684\u3002<\/p>\n\n\n\n<p>\u5728C\u8bed\u8a00\u4e2d\uff0c\u6307\u9488\u7684\u7406\u89e3\u5e94\u8be5\u4e3a\uff1a<strong>\u6307\u9488=\u5185\u5b58\u5730\u5740+\u6570\u636e\u7c7b\u578b<\/strong>\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u5b9a\u4e49\u6307\u9488\u53d8\u91cf\uff08int*\uff09<\/h4>\n\n\n\n<p>\u9605\u8bfb\u4e0b\u5217\u7684\u4ee3\u7801\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int *pointer_1,*pointer_2;<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e24\u884c\u4ee3\u7801\u58f0\u660e\u4e86pointer_1\u548cpointer_2\u662f\u4e24\u4e2a<strong>\u6307\u9488\u53d8\u91cf<\/strong>\uff08\u5b58\u653e<strong>\u6307\u9488<\/strong>\u7684\u53d8\u91cf\uff09\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u53d6\u51fa\u4e00\u4e2a\u53d8\u91cf\u7684\u5730\u5740\uff08&amp;\uff09<\/h4>\n\n\n\n<p>\u9605\u8bfb\u4e0b\u5217\u7684\u4ee3\u7801\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int var1 = 1,var2 = 2;\nint *pointer_1 = &amp;var1,*pointer_2 = &amp;var2;<\/code><\/pre>\n\n\n\n<p>\u7b80\u5355\u770b\u770b\uff0c&#8221;&amp;&#8221;\u5c31\u662f\u53d6\u51fa\u53d8\u91cf\u7684\u5185\u5b58\u5730\u5740\uff0c\u5e76\u5c06\u5730\u5740\u8d4b\u503c\u7ed9\u6307\u9488\u53d8\u91cf\u3002\u4f46\u5b9e\u9645\u4e0a\u8fd9\u4e2a\u7406\u89e3\u6709\u95ee\u9898\u3002<\/p>\n\n\n\n<p>\u8ba9\u6211\u4eec\u5bf9\u8fd9\u4e2a\u4ee3\u7801\u505a\u4e00\u4e0b\u4fee\u6539\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int var1 = 1,var2 = 2;\ndouble *pointer_1 = &amp;var1,*pointer_2 = &amp;var2;<\/code><\/pre>\n\n\n\n<p>\u5bf9\u4ee3\u7801\u8fdb\u884c\u7f16\u8bd1\uff0c\u5c31\u4f1a\u62a5\u4e0b\u9762\u7684\u9519\u8bef\uff1a<\/p>\n\n\n\n<p>error: initialization of &#8216;double *&#8217; from incompatible pointer type &#8216;int *&#8217; [-Wincompatible-pointer-types]<\/p>\n\n\n\n<p>\u5982\u679c\u5355\u5355\u662f\u5730\u5740\uff0c\u90a3\u4e48\u53ea\u8981\u662f\u6307\u9488\u53d8\u91cf\uff0c\u90fd\u5e94\u8be5\u80fd\u63a5\u6536\uff0c\u6839\u636e\u62a5\u9519\u6765\u770b\uff0c&#8221;&amp;&#8221;\u8fd4\u56de\u7684\u6307\u9488\u65e2\u5305\u62ec\u4e86<strong>\u5185\u5b58\u5730\u5740<\/strong>\uff0c\u4e5f\u5305\u62ec\u4e86<strong>\u6570\u636e\u7c7b\u578b<\/strong>\u3002<\/p>\n\n\n\n<p>\u5728C\u8bed\u8a00\u4e2d\uff0c\u4e00\u4e2a\u53d8\u91cf\u7684\u6307\u9488\u7684\u542b\u4e49\u5305\u62ec\u4e24\u4e2a\u65b9\u9762\uff0c\u4e00\u662f\u4ee5\u5b58\u50a8\u5355\u5143\u7f16\u53f7\u8868\u793a\u7684<strong>\u5185\u5b58\u5730\u5740<\/strong>\uff08\u5982\u7f16\u53f7\u4e3a2000\u7684\u5b57\u8282\uff09\uff0c\u4e00\u662f\u5b83\u6307\u5411\u7684\u5b58\u50a8\u5355\u5143\u7684<strong>\u6570\u636e\u7c7b\u578b<\/strong>\uff08\u5982int\uff0cchar\uff0cfloat\u7b49\uff09\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u8bbf\u95ee\u6307\u9488\uff08*p\uff09<\/h4>\n\n\n\n<p>*\uff1a\u6307\u9488\u8fd0\u7b97\u7b26\uff08\u4e5f\u53eb&#8221;\u95f4\u63a5\u8bbf\u95ee&#8221;\u8fd0\u7b97\u7b26\uff09\uff0c*p\u4ee3\u8868\u6307\u9488\u53d8\u91cf\u6307\u5411\u7684\u5bf9\u8c61\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int a = 1; \/\/ \u5b9a\u4e49\u4e00\u4e2a\u53d8\u91cfa\nint *p = &amp;a; \/\/ \u53d6a\u7684\u5730\u5740\u5e76\u7528\u6307\u9488\u53d8\u91cfp\u5b58\u50a8\n*p = 3; \/\/ \u4f7f\u7528\"*\"\u64cd\u4f5c\u7b26\uff08\"\u95f4\u63a5\u8bbf\u95ee\"\u8fd0\u7b97\u7b26\uff09\u4fee\u6539p\u6307\u5411\u7684\u53d8\u91cfa\u7684\u503c\u4e3a3<\/code><\/pre>\n\n\n\n<p>\u6240\u4ee5\u6709\u4e2a\u7ecf\u5178\u7684\u95ee\u9898\uff1a\u6211\u80fd\u5426\u7528int\u5b58\u653e\u6307\u9488\u5e76\u64cd\u4f5c\u5bf9\u5e94\u7684\u53d8\u91cf\uff1f<\/p>\n\n\n\n<p>\u7b54\u6848\u663e\u7136\uff0c\u662f\u4e0d\u884c\u7684\u3002\u5728\u4e0a\u6587\u4e2d\u4f60\u53ef\u4ee5\u53d1\u73b0\uff0cC\u8bed\u8a00\u7684\u6307\u9488\u5e76\u4e0d\u662f\u5355\u4e00\u7684\u5185\u5b58\u5730\u5740\uff0c\u800c\u662f\u5305\u542b\u4e86\u6570\u636e\u7c7b\u578b\u3002\u4f46\u662f\uff0c\u4f60\u53ef\u4ee5\u5c06\u4e00\u4e2a\u6307\u9488\u4f5c\u4e3a\u6574\u6570\u8f93\u51fa\uff0c\u76f4\u89c2\u611f\u53d7\u4ec0\u4e48\u662f\u6307\u9488\u3002\uff08\u4e5f\u5c31\u662f\u8bf4\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u662f\u4e0d\u53ef\u9006\u7684\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;stdio.h&gt;\n#include &lt;stdlib.h&gt;\n\nint main(){\n    int value = 10;\n    int *ptr = &amp;value; \/\/ ptr\u6307\u5411value\u7684\u5730\u5740\n    int *arr = (int*)malloc(sizeof(int)*13);\n\n    \/\/ \u8f93\u51fa\u6307\u9488\u53d8\u91cf\u7684\u5730\u5740\uff08\u5373ptr\u5b58\u50a8\u7684\u503c\uff09\n    printf(\"Pointer address: %X\\n\", ptr);\n    printf(\"Pointer address: %X\\n\", arr);\n    return 0;\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u6307\u9488\u4e0e\u4e8c\u7ef4\u6570\u7ec4<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">sizeof\u8fd0\u7b97\u7b26<\/h3>\n\n\n\n<p>\u5728C\u8bed\u8a00\u4e2d\uff0c<code>sizeof<\/code>\u8fd0\u7b97\u7b26\u7528\u4e8e\u786e\u5b9a\u53d8\u91cf\u6216\u6570\u636e\u7c7b\u578b\u7684\u5927\u5c0f\uff08\u4ee5\u5b57\u8282\u4e3a\u5355\u4f4d\uff09\u3002<code>sizeof<\/code>\u662f\u4e00\u4e2a\u7f16\u8bd1\u65f6\u8fd0\u7b97\u7b26\uff0c\u5b83\u7684\u7ed3\u679c\u662f\u7531\u6240\u4f7f\u7528\u5e73\u53f0\u7684\u5b57\u8282\u5927\u5c0f\u51b3\u5b9a\u7684\uff0c<strong>\u8ba1\u7b97\u662f\u901a\u8fc7\u7f16\u8bd1\u5668\u8ba1\u7b97\u7684\uff0c\u800c\u4e0d\u662f\u901a\u8fc7\u8fd0\u884c\u540e\u6d4b\u91cf\u7684<\/strong>\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int arr&#91;10];\nprintf(\"Size of array arr: %zu bytes\\n\", sizeof(arr));<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>\u6570\u636e\u7c7b\u578b<\/td><td>\u5927\u5c0f\uff08\u5b57\u8282\uff09<\/td><td>\u6bd4\u7279\u4f4d<\/td><\/tr><tr><td>char<\/td><td>1<\/td><td>8 bit<\/td><\/tr><tr><td>int<\/td><td>4<\/td><td>32 bit<\/td><\/tr><tr><td>float<\/td><td>4<\/td><td>32 bit<\/td><\/tr><tr><td>double<\/td><td>8<\/td><td>64 bit<\/td><\/tr><tr><td>long long int<\/td><td>8<\/td><td>64 bit<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">\u5e38\u89c1\u7684\u6570\u636e\u7c7b\u578b\u53ca\u5176\u5927\u5c0f<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u6570\u7ec4\u7684\u672c\u8d28<\/h3>\n\n\n\n<p>\u5728C\u4e2d\u58f0\u660e\u4e00\u4e2a\u6570\u7ec4\uff0c\u5b9e\u9645\u4e0a\u8fd9\u4e2a\u6807\u8bc6\u7b26\u53ea\u8bb0\u5f55\u4e86\u6570\u7ec4\u7684<strong>\u7b2c\u4e00\u4e2a\u5143\u7d20\u7684\u6307\u9488<\/strong>\u3002<\/p>\n\n\n\n<p>\u6570\u7ec4\u662f\u4e00\u7ec4<strong>\u6709\u5e8f\u6570\u636e<\/strong>\u7684\u96c6\u5408\uff0c\u5176<strong>\u5b58\u50a8\u65b9\u5f0f\u662f\u8fde\u7eed\u7684<\/strong>\uff0c\u4e5f\u5c31\u53ef\u4ee5\u901a\u8fc7\u8ba1\u7b97\u786e\u5b9a\u6bcf\u4e2a\u5143\u7d20\u7684\u6307\u9488\u4f4d\u7f6e\u5e76\u64cd\u4f5c\u5b83\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6307\u9488\u7684\u8fd0\u7b97<\/h3>\n\n\n\n<p>\u6307\u9488\u7684\u52a0\u6cd5\u4e0e\u51cf\u6cd5\uff0c\u5b9e\u9645\u4e0a\u662f\u5728\u5185\u5b58\u5730\u5740\u7684\u57fa\u7840\u4e0a\uff0c\u52a0\u4e0a<strong>\u5bf9\u5e94\u6570\u636e\u7c7b\u578b<\/strong>\u7684<strong>\u6574\u6570\u500d<\/strong>\u3002\u4f8b\u5982\u4e0b\u9762\u7684\u4ee3\u7801\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int a&#91;10];\n*(a+2)=5; \/\/\u5c06a\u4e2d\u7b2c\u4e09\u4e2a\u5143\u7d20\u8d4b\u503c\u4e3a5\na&#91;2]=5; \/\/\u8fd9\u4e24\u4e2a\u5199\u6cd5\u662f\u7b49\u6548\u7684<\/code><\/pre>\n\n\n\n<p>\u7b49\u6548\u539f\u56e0\uff1a[]\u5b9e\u9645\u4e0a\u662f<strong>\u53d8\u5740<\/strong>\u8fd0\u7b97\u7b26\uff0c\u5373\u5c06a[i]\u6309a+i\u8ba1\u7b97\u5730\u5740\uff0c\u7136\u540e\u627e\u51fa\u6b64\u5730\u5740\u5355\u5143\u4e2d\u7684\u503c\u3002\u8fd9\u91cca+2\u8fd0\u7b97\u8fc7\u540e\u5f97\u5230\u7684\u65b0\u6307\u9488\u5730\u5740\u4e3a\uff1aa\u7684<strong>\u9996\u5143\u7d20\u5185\u5b58\u5730\u5740<\/strong>+sizeof(int)*2\uff0c\u6570\u636e\u7c7b\u578b\u4e0d\u53d8\uff0c\u4e3aint\u3002<\/p>\n\n\n\n<p>\u56e0\u6b64\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e0b\u6807\u6cd5\uff1aa[i]<\/li>\n\n\n\n<li>\u6307\u9488\u6cd5\uff1a*(a+i)\u6216*(p+i)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u52a8\u6001\u5185\u5b58\u5206\u914d<\/h3>\n\n\n\n<p>\u6839\u636e\u7a0b\u5e8f\u8fd0\u884c\u72b6\u6001\uff0c\u52a8\u6001\u7533\u8bf7\u7a7a\u95f4\uff0c\u8fd4\u56de\u7684\u5747\u4e3a\u9996\u5143\u7d20\u7684\u6307\u9488\u3002<\/p>\n\n\n\n<p>malloc\uff1a\u7533\u8bf7\u5bf9\u5e94\u5927\u5c0f\u7684\u7a7a\u95f4<\/p>\n\n\n\n<p>calloc\uff1a\u7533\u8bf7n\u4e2a\u5bf9\u5e94\u5927\u5c0f\u7684\u7a7a\u95f4\u5e76\u521d\u59cb\u5316\u4e3a0<\/p>\n\n\n\n<p>realloc\uff1a\u91cd\u65b0\u5206\u914d\u52a8\u6001\u5b58\u50a8\u533a\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int* ptr1 = (int*)malloc(10 * sizeof(int)); \/\/ \u7533\u8bf710\u4e2a\u6574\u578b\u7684\u7a7a\u95f4\nint* ptr2 = (int*)calloc(10, sizeof(int)); \/\/ \u7533\u8bf710\u4e2a\u6574\u578b\u7684\u7a7a\u95f4\u5e76\u521d\u59cb\u5316\u4e3a0\nint* ptr3 = (int*)malloc(5 * sizeof(int)); \/\/ \u521d\u59cb\u5206\u914d5\u4e2a\u6574\u578b\u7684\u7a7a\u95f4\nint* new_ptr = (int*)realloc(ptr3, 10 * sizeof(int));\/\/ \u8c03\u6574\u5185\u5b58\u5927\u5c0f\n\/\/ \u7528\u5b8c\u4e86\u8bb0\u5f97\u91ca\u653e\u7a7a\u95f4\nfree(ptr1);\nfree(ptr2);\nfree(new_ptr);<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b57\u7b26\u4e32<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">ASCII<\/h3>\n\n\n\n<p>\u5728C\u8bed\u8a00\u4e2d\uff0c\u5b57\u7b26\u7528char\u8868\u793a\uff0c\u4e00\u4e2a\u5b57\u7b26\u76f8\u5f53\u4e8e\u4e00\u4e2a\u6574\u6570\uff0c\u5bf9\u5e94\u7684\u4e3aASCII\u8868\uff08\u9644\u5f55A\uff09\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/blue16.cn\/wp-content\/uploads\/2024\/10\/image-45-1024x287.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"287\" data-original=\"https:\/\/blue16.cn\/wp-content\/uploads\/2024\/10\/image-45-1024x287.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1033\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u4e00\u822c\u6765\u8bf4\uff0c\u7528char\u5b58\u653e\u5b57\u7b26\nchar c = 'a';\n\/\/ \u7531\u4e8e\u5b57\u7b26\u76f8\u5f53\u4e8e\u4e00\u4e2a\u6574\u6570\uff0c\u5f53\u7136\u4e5f\u53ef\u4ee5\u901a\u8fc7int\u5b58\u653e\nint c = 'a';\n<\/code><\/pre>\n\n\n\n<p>\u53ef\u4ee5\u8bb0\u4f4f\u51e0\u4e2a\u7279\u6b8a\u503c\uff0c\u540e\u9762\u7528\u8d77\u6765\u65b9\u4fbf<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>ASCII<\/td><td>\u5b57\u7b26<\/td><\/tr><tr><td>48<\/td><td>&#8216;0&#8217;<\/td><\/tr><tr><td>65<\/td><td>&#8216;A&#8217;<\/td><\/tr><tr><td>97<\/td><td>&#8216;a&#8217;<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u8ba4\u8bc6\u5b57\u7b26\u4e32<\/h3>\n\n\n\n<p>C\u8bed\u8a00\u4e2d\u6ca1\u6709\u5b57\u7b26\u4e32\u7c7b\u578b\uff0c\u4e5f\u6ca1\u6709\u5b57\u7b26\u4e32\u53d8\u91cf\uff0c\u5b57\u7b26\u4e32\u662f\u5b58\u653e\u5728<strong>\u5b57\u7b26\u578b\u6570\u7ec4<\/strong>\u4e2d\u7684\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>char c&#91;]={\"China\"};\nprintf(\"%s\\n\",c);\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u6bb5\u4ee3\u7801\u4e2d\uff0cc\u7684\u5b9e\u9645\u5b58\u50a8\u60c5\u51b5\u5982\u4e0b\uff1a<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/blue16.cn\/wp-content\/uploads\/2024\/10\/image-46.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"556\" height=\"140\" data-original=\"https:\/\/blue16.cn\/wp-content\/uploads\/2024\/10\/image-46.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1036\" style=\"width:270px;height:auto\"  sizes=\"auto, (max-width: 556px) 100vw, 556px\" \/><\/div><\/figure>\n<\/div>\n\n\n<p>\u8fd9\u91ccc\u7684\u957f\u5ea6\u7f16\u8bd1\u5668\u81ea\u52a8\u8ba1\u7b97\u4e86\uff0c\u5f97\u51fa\u7684\u5e94\u8be5\u662f6\u3002\u4e3a\u4ec0\u4e48\u662f6\u5462\uff1f\u56e0\u4e3a\u7ed3\u5c3e\u8fd8\u6709\u4e2a&#8221;\\0&#8243;\uff0c\u5982\u679c\u4f7f\u7528printf\u8f93\u51fa\uff0c\u5c31\u662f\u8bc6\u522b\u5230&#8221;\\0&#8243;\u7ed3\u675f\u8f93\u51fa\u7684\uff0c\u5982\u679c\u6ca1\u6709&#8221;\\0&#8243;\uff0c\u4f1a\u8f93\u51fa\u4e00\u5806\u4e71\u7801\u3002<\/p>\n\n\n\n<p>\u4f60\u8bf4\u6211\u975e\u8981\u64cd\u4f5cchar[9]\u6216\u8005char[10]\u4f1a\u600e\u4e48\u6837\uff1fJava\u7b49\u9ad8\u7ea7\u7f16\u7a0b\u8bed\u8a00\u7f16\u8bd1\u5c31\u4f1a\u62a5\u9519\u5bfc\u81f4\u4e0d\u901a\u8fc7\uff0c\u4f46\u662fC\u65e0\u6240\u8c13\uff0c\u8fd9\u4e5f\u5c31\u7ed9\u9ed1\u5ba2\u5e26\u6765\u4e86\u673a\u4f1a\uff1a\u201d\u7f13\u51b2\u533a\u6ea2\u51fa\u653b\u51fb\u201c<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b57\u7b26\u4e32\u76f8\u5173\u51fd\u6570<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u683c\u5f0f\u5316\uff08sprintf\u3001fprintf\u3001printf\uff09<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>sprintf<\/code>\uff1a\u5b57\u7b26\u6570\u7ec4<\/li>\n\n\n\n<li><code>fprintf<\/code>\uff1a\u6587\u4ef6\u6d41\uff08\u53ef\u4ee5\u662f\u6807\u51c6\u8f93\u51fa\u3001\u6587\u4ef6\u7b49\uff09<\/li>\n\n\n\n<li><code>printf<\/code>\uff1a\u6807\u51c6\u8f93\u51fa\uff08\u901a\u5e38\u662f\u5c4f\u5e55\uff09<\/li>\n<\/ul>\n\n\n\n<p>\u53ef\u4ee5\u7528sprintf\u628a\u4fe1\u606f\u8f93\u51fa\u5230\u5b57\u7b26\u4e32\uff0c\u7528\u6cd5\u548cprintf\u3001fprintf\u7c7b\u4f3c\u3002\u4f46\u5e94\u5f53\u4fdd\u8bc1\u5b57\u7b26\u4e32\u8db3\u591f\u5927\uff0c\u53ef\u4ee5\u5bb9\u7eb3\u8f93\u51fa\u4fe1\u606f\u3002<\/p>\n\n\n\n<p>sprintf\u7684\u7528\u6cd5\uff1a<strong>\u8f93\u51fa\u5230\u5b57\u7b26\u4e32<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;stdio.h&gt;\n\nint main() {\n    char buffer&#91;100];\n    int num = 42;\n    sprintf(buffer, \"The answer to life, the universe, and everything is %d.\", num);\n    \/\/ buffer now contains the formatted string\n    \/\/ Use another function to print the buffer, or use it in another context\n    printf(\"%s\\n\", buffer); \/\/ This line is just to demonstrate the content of buffer\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p>fprintf\u7684\u7528\u6cd5\uff1a<strong>\u8f93\u51fa\u5230\u6587\u4ef6<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;stdio.h&gt;\n\nint main() {\n    FILE *file = fopen(\"output.txt\", \"w\"); \/\/ Open file for writing\n    if (file == NULL) {\n        perror(\"Error opening file\");\n        return 1;\n    }\n    int num = 42;\n    fprintf(file, \"The answer to life, the universe, and everything is %d.\\n\", num);\n    fclose(file); \/\/ Close the file\n    return 0;\n}\n<\/code><\/pre>\n\n\n\n<p>printf\u7684\u7528\u6cd5\uff1a<strong>\u8f93\u51fa\u5230\u7ec8\u7aef<\/strong>\uff08\u7565\uff09<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u8f93\u5165\u4e0e\u8f93\u51fa\uff08puts\u3001gets\u3001getchar\uff09<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>puts(\u5b57\u7b26\u6570\u7ec4)\uff1a\u8f93\u51fa\u4e00\u4e2a\u5b57\u7b26\u5230\u7ec8\u7aef\u3002<\/li>\n\n\n\n<li>gets(\u5b57\u7b26\u6570\u7ec4)\uff1a\u8f93\u5165\u4e00\u4e2a\u5b57\u7b26\u4e32\u5230\u5b57\u7b26\u6570\u7ec4\u3002\uff08\u73b0\u5728\u5e38\u7528getchar\uff09<\/li>\n<\/ul>\n\n\n\n<p>gets\u548cgetchar\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>gets<\/code>&nbsp;\u51fd\u6570\u7528\u4e8e\u8bfb\u53d6\u4e00\u884c\u6587\u672c\u76f4\u5230\u9047\u5230\u6362\u884c\u7b26\uff08\u2018\\n\u2019\uff09\u6216EOF\uff08\u6587\u4ef6\u7ed3\u675f\u6807\u5fd7\uff09\uff0c\u7136\u540e\u5b83\u4f1a\u4e22\u5f03\u6362\u884c\u7b26\uff0c\u5e76\u7528\u7a7a\u5b57\u7b26\uff08\u2018\\0\u2019\uff09\u66ff\u6362\u5b83\uff0c\u4f5c\u4e3a\u5b57\u7b26\u4e32\u7684\u7ed3\u675f\u6807\u5fd7\u3002<code>gets<\/code>&nbsp;\u51fd\u6570\u4f1a\u5c06\u8bfb\u53d6\u7684\u5b57\u7b26\u4e32\u5b58\u50a8\u5728\u7531\u5176\u53c2\u6570\u6307\u5b9a\u7684\u5b57\u7b26\u6570\u7ec4\u4e2d\u3002<\/li>\n\n\n\n<li><code>getchar<\/code>&nbsp;\u51fd\u6570\u7528\u4e8e\u8bfb\u53d6\u4e0b\u4e00\u4e2a\u53ef\u7528\u7684\u5b57\u7b26\uff0c\u901a\u5e38\u662f\u7528\u6237\u8f93\u5165\u7684\u7b2c\u4e00\u4e2a\u5b57\u7b26\uff0c\u5e76\u8fd4\u56de\u8bfb\u53d6\u7684\u5b57\u7b26\u4f5c\u4e3a&nbsp;<code>int<\/code>&nbsp;\u7c7b\u578b\u7684\u503c\u3002\u5982\u679c\u9047\u5230\u6587\u4ef6\u7ed3\u675f\u6216\u8bfb\u53d6\u9519\u8bef\uff0c\u5219\u8fd4\u56deEOF\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6ce8\u610f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>gets<\/code>&nbsp;\u51fd\u6570\u662f\u4e0d\u5b89\u5168\u7684\uff0c\u56e0\u4e3a\u5b83\u4e0d\u68c0\u67e5\u76ee\u6807\u7f13\u51b2\u533a\u7684\u5927\u5c0f\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u7f13\u51b2\u533a\u6ea2\u51fa\uff0c\u8fd9\u662f\u4e00\u4e2a\u4e25\u91cd\u7684\u5b89\u5168\u6f0f\u6d1e\u3002\u56e0\u6b64\uff0c\u5728\u65b0\u7684\u4ee3\u7801\u4e2d\u4e0d\u5e94\u4f7f\u7528&nbsp;<code>gets<\/code>&nbsp;\u51fd\u6570\u3002<\/li>\n\n\n\n<li><code>getchar<\/code>&nbsp;\u662f\u5b89\u5168\u7684\uff0c\u56e0\u4e3a\u5b83\u4e00\u6b21\u53ea\u8bfb\u53d6\u4e00\u4e2a\u5b57\u7b26\uff0c\u4e0d\u4f1a\u5bfc\u81f4\u7f13\u51b2\u533a\u6ea2\u51fa\u3002<\/li>\n<\/ul>\n\n\n\n<p>getchar\u8bfb\u53d6\u6574\u4e2a\u6587\u672c\uff08\u5305\u62ec\u7a7a\u683c\u56de\u8f66\uff09\uff0c\u6838\u5fc3\u662f<strong>\u5224\u65ad\u662f\u5426\u5230EOF<\/strong>\uff08End of File\uff0c\u4e3a\u4e00\u4e2a-1\u7684\u5e38\u91cf\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;stdio.h&gt;\n\nint main() {\n    char ch;\n\n    printf(\"Enter your article (press Ctrl+D or Ctrl+Z to end):\\n\");\n\n    \/\/ \u5faa\u73af\u8bfb\u53d6\u5b57\u7b26\u76f4\u5230EOF\n    while ((ch = getchar()) != EOF) {\n        putchar(ch); \/\/ \u5c06\u8bfb\u53d6\u7684\u5b57\u7b26\u8f93\u51fa\u5230\u6807\u51c6\u8f93\u51fa\n    }\n\n    return 0;\n}\n<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\u64cd\u4f5c\u7c7b\u51fd\u6570\uff08strcat\u3001strcpy\u3001strncpy\u3001strcmp\u3001strlen\u3001strlwr\u3001strupr\uff09<\/h4>\n\n\n\n<p>\u53c2\u9605P158\uff0c<strong>\u7528\u5230\u518d\u67e5<\/strong>\uff0c\u6ca1\u5fc5\u8981\u4e00\u6b21\u6027\u8bb0\u90a3\u4e48\u591a\u2026\u2026<\/p>\n\n\n\n<p>strlen\uff1a\u6d4b\u51fa\u7684\u957f\u5ea6\u4e0d\u5305\u62ec\u201d\\0\u201c<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6742\u4e03\u6742\u516b\u7684<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fd8\u6709\u5565\u6ca1\u8bb2<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6574\u6570\u7684\u539f\u7801\u3001\u53cd\u7801\u4e0e\u8865\u7801\u8868\u793a<\/li>\n\n\n\n<li>\u4ece\u5806\u533a\u7533\u8bf7\u7a7a\u95f4\uff0c\u5b9e\u73b0\u52a8\u6001\u6570\u7ec4\uff08\u8981\u8003\uff09<\/li>\n\n\n\n<li>\u6307\u9488\u4e0e\u591a\u7ef4\u6570\u7ec4<\/li>\n\n\n\n<li>\u5168\u5c40\u53d8\u91cf\u4e0e\u5c40\u90e8\u53d8\u91cf\u3001\u53d8\u91cf\u5b58\u50a8\u4f4d\u7f6e<\/li>\n\n\n\n<li>\u6307\u9488\u4e0e\u51fd\u6570\u3001\u51fd\u6570\u6307\u9488\u7684\u5e94\u7528<\/li>\n\n\n\n<li>void* \u7b49<\/li>\n\n\n\n<li>\u4e8c\u91cd\u6307\u9488\u3001\u591a\u91cd\u6307\u9488<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u5efa\u8bae\u600e\u4e48\u5b66<\/h3>\n\n\n\n<p>\u5148\u5b66C\uff1a\u8001\u8001\u5b9e\u5b9e\u5730\u628a\u6211\u8bf4\u7684\u8fd9\u4e9b\u539f\u7406\u5b66\u900f\u5c31\u884c\uff0c\u8bed\u6cd5\u540e\u9762\u5fd8\u8bb0\u4e86\u90fd\u662f\u65e0\u6240\u8c13\u7684\uff0c\u4f46\u662f\u5f97\u8bb0\u4f4f\u539f\u7406\u3002<\/p>\n\n\n\n<p>\u7136\u540e\u4e0aC++\/Java\uff1a\u4e24\u4e2a\u5bf9\u6bd4\u5b66\u4e60<\/p>\n\n\n\n<p>\u6700\u540e\u4f60\u5c31\u53d1\u73b0Python\u3001PHP\u3001JavaScript\u4e0d\u7528\u5b66\u4e86<\/p>\n\n\n\n<p>\u60f3\u8981\u6df1\u7a76\u8ba1\u7b97\u673a\u539f\u7406\uff1a\u63a8\u8350\u53bb\u5b66\u4e60\u6c47\u7f16\u8bed\u8a00<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u53c2\u8003<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e66\u7c4d\u540d\u79f0\uff1aC\u8bed\u8a00\u7a0b\u5e8f\u8bbe\u8ba1\uff08\u7b2c\u4e94\u7248\uff09\u2014\u2014\u8c2d\u6d69\u5f3a\u3001\u7b97\u6cd5\u7ade\u8d5b\u5165\u95e8\u7ecf\u5178\uff08\u7d2b\u4e66\uff09<\/li>\n\n\n\n<li>\u7ae0\u8282\u540d\u79f0\uff1a\u7b2c6\u7ae0 \u5229\u7528\u6570\u7ec4\u5904\u7406\u6279\u91cf\u6570\u636e<\/li>\n<\/ul>\n\n\n\n<p><a href=\"https:\/\/www.cnblogs.com\/feily\/articles\/14081630.html\">[\u6574\u7406] \u6d45\u8c08\u5806\u3001\u6808\u3001\u5806\u533a\u3001\u6808\u533a\u7684\u6982\u5ff5\u548c\u533a\u522b &#8211; \u54c6\u5566\u68a6\u4e50\u56ed &#8211; \u535a\u5ba2\u56ed (cnblogs.com)<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/juejin.cn\/post\/7145614147101655070\">\u6d45\u6790C\u8bed\u8a00\u4e2d\u7684\u5185\u5b58\u6a21\u578b\u6211\u6b63\u5728\u53c2\u52a0\u300c\u6398\u91d1\u00b7\u542f\u822a\u8ba1\u5212\u300d \u524d\u8a00 \u8fd1\u6765\u5b66\u4e60\u6df1\u89c9\u81ea\u5df1\u5728\u8bed\u8a00\u7684\u5e95\u5c42\u65b9\u9762\u7406\u89e3\u6b20\u7f3a\uff0c \u6b63\u597d\u4e4b\u524d\u6709\u770b\u8fc7\u4e00\u70b9 &#8211; \u6398\u91d1 (juejin.cn)<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u4ecb \u8fd9\u4e00\u90e8\u5206\uff0c\u662fC\u8bed\u8a00\u7684\u91cd\u4e2d\u4e4b\u91cd\u3002\u5b66\u4e60\u5b8cC\u8bed\u8a00\u4e4b\u540e\uff0c\u61c2\u5f97\u539f\u7406\u6bd4\u8bb0\u5f97\u4f4f\u600e\u4e48\u5199\u4ee3\u7801\u66f4\u91cd\u8981\u3002\u56e0\u4e3a\u540e\u9762\u5199\u4ee3\u7801\u5f88\u5c11\u9047\u5230 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