{"id":1289,"date":"2022-11-03T21:16:00","date_gmt":"2022-11-03T13:16:00","guid":{"rendered":"https:\/\/www.mustenaka.cn\/?p=1289"},"modified":"2023-05-30T23:44:46","modified_gmt":"2023-05-30T15:44:46","slug":"about-cisweaklytyped","status":"publish","type":"post","link":"https:\/\/www.mustenaka.cn\/index.php\/2022\/11\/03\/about-cisweaklytyped\/","title":{"rendered":"\u4e00\u4e2a\u601d\u8003\u2014\u2014C\u8bed\u8a00\u662f\u5f31\u7c7b\u578b\u8bed\u8a00\u4e48\uff1f"},"content":{"rendered":"<p>\u5728\u5b66\u751f\u65f6\u4ee3\u751f\u6daf\uff0c\u8001\u5e08\u5e38\u5e38\u4f1a\u8bf4\u4e00\u4e2a\u8bed\u8a00\u662f\u5f3a\u7c7b\u578b\u8fd8\u662f\u5f31\u7c7b\u578b\uff0c\u6bd4\u5982\u8ba4\u4e3aC\u8bed\u8a00\u662f\u5f3a\u7c7b\u578b\uff0cPython\/Js\u662f\u5f31\u7c7b\u578b\u8bed\u8a00\uff1b\u5728\u5de5\u4f5c\u540e\u5b66\u4e60Golang\u65f6\u770b\u5230\u4e86\u4e00\u672c\u4e66\u300aGo\u8bed\u8a00\u8bbe\u8ba1\u4e0e\u5b9e\u73b0\u300b\uff08\u7535\u5b50\u7248\u94fe\u63a5\uff1a<a href=\"https:\/\/draveness.me\/golang\/\">https:\/\/draveness.me\/golang\/<\/a>\uff09\u5374\u8bf4\uff0cC\u8bed\u8a00\u662f\u5f31\u7c7b\u578b\u8bed\u8a00\uff0c\u6211\u628a\u8fd9\u4e2a\u89c2\u70b9\u540c\u540c\u4e8b\u4ee5\u53ca\u5728\u516c\u53f8\u7684\u6559\u6388\u5206\u4eab\u6c9f\u901a\uff0c\u53d1\u73b0\u5927\u5bb6\u5bf9\u8fd9\u4e2a\u89c2\u70b9\u6301\u6709\u4e0d\u540c\u610f\u89c1\uff0c\u5728\u7ffb\u9605\u8d44\u6599\uff0c\u641c\u7d22\u5f15\u64ce\u540e\uff0c\u6211\u5374\u4e5f\u540c\u610f\u4e86C\u8bed\u8a00\u662f\u5f31\u7c7b\u578b\u8bed\u8a00\u8fd9\u4e2a\u89c2\u70b9\uff0c\u90a3\u4e48\u4e3a\u4ec0\u4e48\u8bf4\u2014\u2014C\u8bed\u8a00\u662f\u5f31\u7c7b\u578b\u8bed\u8a00\u5462\uff1f<\/p>\n<p><!--more--><\/p>\n<h1>1.\u5f3a\u5f31\u7c7b\u578b\u533a\u522b<\/h1>\n<p>\u9996\u5148\u6211\u4eec\u660e\u786e\u65e0\u8bba\u662fIEEE\u8fd8\u662f\u8bed\u8a00\u6807\u51c6\u7684\u534f\u4f1a\u4e5f\u597d\uff0c\u5bf9\u5f3a\u5f31\u7c7b\u578b\u5e76\u6ca1\u6709\u4e00\u4e2a\u660e\u786e\u7684\u3001\u6743\u5a01\u7684\u5212\u5206\uff0c\u5bf9\u4e8e\u5f3a\u5f31\u7c7b\u578b\u800c\u8a00\uff0c\u6211\u4eec\u5f80\u5f80\u540c\u4ed6\u7684\u73b0\u8c61\u548c\u7279\u6027\u4e2d\u8fdb\u884c\u5224\u65ad\uff1a<\/p>\n<blockquote><p>\u5f3a\u7c7b\u578b\uff1a<\/p>\n<p>\u5728\u7f16\u8bd1\u671f\u95f4\u4f1a\u6709\u66f4\u52a0\u4e25\u683c\u7684<strong>\u7c7b\u578b\u9650\u5236<\/strong>\uff0c\u4e5f\u5c31\u662f\u7f16\u8bd1\u5668\u4f1a\u5728\u7f16\u8bd1\u671f\u95f4\u53d1\u73b0\u53d8\u91cf\u7684\u8d4b\u503c\u3001\u8fd4\u56de\u503c\u548c\u51fd\u6570\u8c03\u7528\u65f6\u51fa\u73b0\u7684\u7c7b\u578b\u9519\u8bef\u3002<\/p>\n<p>\u5f31\u7c7b\u578b\uff1a<\/p>\n<p>\u5f31\u7c7b\u578b\u7684\u7f16\u7a0b\u8bed\u8a00\u5728<strong>\u51fa\u73b0\u7c7b\u578b\u9519\u8bef<\/strong>\u53ef\u80fd\u4f1a\u5728\u8fd0\u884c\u65f6\u8fdb\u884c<strong>\u9690\u5f0f\u7c7b\u578b\u8f6c\u6362<\/strong>\uff0c\u8fd9\u53ef\u80fd\u4f1a\u9020\u6210\u8fd0\u884c\u9519\u8bef\u3002<\/p><\/blockquote>\n<p>\u4f5c\u4e3a\u4e00\u79cd\u62bd\u8c61\u5b9a\u4e49\uff0c\u5176\u8bed\u8a00\u4f7f\u7528\u8005\u8981\u60f3\u8981\u533a\u5206\u5f3a\u5f31\u7c7b\u578b\uff0c\u66f4\u5e94\u8be5\u6ce8\u610f\uff1a<\/p>\n<ul>\n<li>\u7c7b\u578b\u7684\u8f6c\u6362\u662f\u663e\u793a\u7684\u8fd8\u662f\u9690\u5f0f\u7684\uff1f<\/li>\n<li>\u7f16\u8bd1\u5668\u4f1a\u5e2e\u52a9\u6211\u4eec\u63a8\u65ad\u53d8\u91cf\u7684\u7c7b\u578b\u4e48\uff1f<\/li>\n<\/ul>\n<h1>2.C\u8bed\u8a00\u7279\u70b9<\/h1>\n<p>\u76f4\u63a5\u4e0a\u4e00\u6bb5C\u8bed\u8a00\u7684\u4ee3\u7801\u5206\u6790\u3002<\/p>\n<pre class=\"pure-highlightjs\"><code class=\"\" cpp=\"\">#include&lt;stdio.h&gt;\r\n\r\nint main(void) {\r\n\tchar a='a';\r\n\tint b=10;\r\n\tint c=a+b;\r\n\treturn 0;\r\n}<\/code><\/pre>\n<p>\u4e0a\u8ff0C\u8bed\u8a00\u4ee3\u7801\u4e2d\uff0cchar\u7c7b\u578b\u548cint\u7c7b\u578b\u662f\u53ef\u4ee5\u76f4\u63a5\u8fd0\u7b97\u7684\uff0c\u56e0\u4e3achar\u7c7b\u578b\u4f1a\u88ab\u63d0\u5347\u4e3aint\u7c7b\u578b\uff0c\u8fd9\u5176\u5b9e\u662f\u4e00\u79cd\u9690\u5f0f\u7c7b\u578b\u8f6c\u6362\uff0c\u5c06\u7cbe\u5ea6\u5c0f\u7684\u8f6c\u6362\u4e3a\u5927\u7684\u7cbe\u5ea6\u7684\u3002<\/p>\n<p>\u518d\u63a5\u7740\u4e0a\u4e00\u6bb5\u4ee3\u7801<\/p>\n<pre class=\"pure-highlightjs\"><code class=\"\" cpp=\"\">#include &lt;stdio.h&gt;\r\n\r\nint main() {\r\n    int a='abcd';\r\n    putchar(a);\r\n    return 0;\r\n}<\/code><\/pre>\n<p>\u5728\u8fd9\u4e00\u6bb5\u4ee3\u7801\u7684\u8f93\u51fa\u7ed3\u679c\u4e2d\uff0c\u663e\u793a\u662f\u2018d\u2019\uff0c\u800c\u5982\u679c\u6211\u4eec\u628a<code class=\"\" cpp=\"\">int a='abcd';<\/code>\u4fee\u6539\u4e3a<code class=\"\" cpp=\"\">int a='abcdf';<\/code>\uff0c\u5219\u4f1a\u76f4\u63a5\u663e\u793a\u62a5\u9519\uff0c\u63d0\u793a\u6211\u4eec<\/p>\n<blockquote><p>c:4:11: warning: multi-character character constant [-Wmultichar]<br \/>\nint a=&#8217;abcdf&#8217;;<\/p><\/blockquote>\n<p>\u800c\u8fd9\u7c7b\u64cd\u4f5c\u5728\u5176\u4ed6\u7684\u5f3a\u7c7b\u578b\u8bed\u8a00\u4e2d\u662f\u65e0\u6cd5\u505a\u5230\u7684\uff0c\u9876\u591a\u662f\u4e00\u4e2aint\u548cfloat\u76f8\u52a0\u5141\u8bb8\u3002<\/p>\n<p>\u518d\u8fdb\u884c\u4e00\u4e2a\u8865\u5145\uff1a<\/p>\n<pre class=\"pure-highlightjs\"><code class=\"\" cpp=\"\">int a = 0;\r\nif(a) {\r\n\t\r\n}<\/code><\/pre>\n<p>\u901a\u8fc7\u5b9a\u4e49\u4e00\u4e2a\u6574\u5f62\uff0c\u8ba9\u8fd9\u4e2a\u6574\u5f62\u653e\u5165if\u4e2d\u8fdb\u884c\u5224\u65ad\uff0c\u5728c\u8bed\u8a00\u4e2d\uff0c\u662f\u6ca1\u6709\u9519\u8bef\u7684\u53ef\u4ee5\u901a\u8fc7\uff0c\u800c\u518d\u53e6\u4e00\u4e9b\u8bed\u8a00\uff0c\u5982Java\u548cGolang\u4e2d\uff0c\u5219\u4e0d\u884c\uff0c\u4f1a\u62a5\u9519if\u53ea\u5141\u8bb8bool\u7c7b\u578b\u4f20\u5165\u8fdb\u884c\u5224\u65ad\u3002<\/p>\n<p>\u5728\u300aC\u4e13\u5bb6\u7f16\u7a0b\u300b\u4e00\u4e66\u4e2d\uff0c\u660e\u786e\u8868\u8fbeC\u662f\u6392\u65a5\u5f3a\u7c7b\u578b\u7684\uff0cC\u7684\u7c7b\u578b\u7cfb\u7edf\u8bbe\u8ba1\u662f\u4e3a\u4e86\u4f5c\u8005\u533a\u5206\u786c\u4ef6\u673a\u5668\u7684\u4e0d\u540c\u6570\u636e\u7c7b\u578b\uff08\u5360\u7528\u5185\u5b58\u7684\u5b50\u957f\uff09\u800c\u975e\u4fdd\u62a4\u7a0b\u5e8f\u733f\u8fdb\u884c\u65e0\u6548\u7684\u64cd\u4f5c\u3002\u8fd9\u4e00\u70b9\u4e5f\u53ef\u4ee5\u4f53\u73b0\u5728Memset\u521d\u59cb\u5316\u975e0\uff0c\u975e1\u5b50\u8282\u957f\u5ea6\u7684\u6570\u7ec4\u7684\u5947\u602a\u4f53\u9a8c\u4e0a\u3002<\/p>\n<p>\u867d\u7136C\u8bed\u8a00\u662f\u652f\u6301\u663e\u793a\u7c7b\u578b\u8f6c\u6362\u548c\u9690\u5f0f\u7c7b\u578b\u8f6c\u6362\u4e24\u79cd\u7684\uff0c\u4f46\u662f\u5728\u4e00\u4e9b\u7279\u6b8a\u7684\u5e94\u8be5\u4f20\u8fbe\u51fa\u9519\u8bef\u7684\u573a\u5408\uff0cC\u8bed\u8a00\u5374\u66f4\u52a0\u503e\u5411\u4e8e\u76f4\u63a5\u4f7f\u7528\u9690\u5f0f\u7c7b\u578b\u8f6c\u6362\u4e13\u6ce8\u4e8e\u5185\u5b58\u7684\u5b9e\u9645\u60c5\u51b5\uff0c\u4ece\u8fd9\u4e00\u70b9\u800c\u8a00C\u8bed\u8a00\u662f\u504f\u5411\u4e8e\u9690\u5f0f\u7684\u3002<\/p>\n<h1>3.NULL\u601d\u8003\u2014\u2014C\u8bed\u8a00\u4e0eC++<\/h1>\n<p>NULL\u2014\u2014\u7a7a\u7c7b\u578b\uff0c\u5176\u6807\u51c6\u5b9a\u4e49\u662f\uff1a<\/p>\n<blockquote><p><span>#define NULL &lt;either 0, 0L, or (void *)0&gt; [0 in C++]<\/span><\/p><\/blockquote>\n<p>\u6839\u636e\u4e24\u884c\u4ee3\u7801<\/p>\n<ol>\n<li><span>int n = NULL;<\/span><\/li>\n<li><span>int* p = NULL;<\/span><\/li>\n<\/ol>\n<p>\u5728C\u8bed\u8a00\u4e2d\uff0c\u56e0\u4e3aNULL\u7c7b\u578b\u662fvoid*\uff0c\u4ed6\u662f\u4e00\u4e2a\u4e07\u80fd\u6307\u9488\u7c7b\u578b\uff0c\u56e0\u6b641\u4e0d\u5408\u6cd5\uff0c\u4e0d\u80fd\u5c06\u6307\u9488\u7c7b\u578b\u9690\u5f0f\u7684\u8f6c\u6362\u4e3a\u6574\u5f62\uff0c\u800c2\u662f\u5408\u6cd5\u7684\uff0cvoid*\u9690\u5f0f\u7684\u5141\u8bb8\u8f6c\u4e3a\u4efb\u610f\u7c7b\u578b\u6307\u9488<\/p>\n<p>\u5728C++\u4e2d\uff0c\u7531\u4e8e\u7981\u6b62\u9690\u5f0f\u7684\u5c06void*\u8f6c\u4e3a\u4efb\u610f\u5176\u4ed6\u7684\u6307\u9488\u7c7b\u578b\uff0c\u6240\u4ee5\u4e3a\u4e86\u8ba92\u5408\u6cd5\uff0cNULL\u7c7b\u578b\u88ab\u5b9a\u4e49\u4e3a\u4e86\u6574\u5f62\uff0c\u540c\u65f6\u4e5f\u4f7f\u5f971\u5408\u6cd5\u5316\u4e86\u3002<\/p>\n<p>\u4ece\u8fd9\u4e00\u70b9\u53ef\u4ee5\u770b\u51fa\uff0cC\u8bed\u8a00\u7684\u7f16\u8bd1\u5668\u5728\u9762\u5bf9\u4e0d\u540c\u7684\u7c7b\u578b\u65f6\uff0c\u9009\u62e9\u91c7\u7528void*\u4e07\u80fd\u7c7b\u578b\u53bb\u89e3\u91ca\uff0c\u800c\u975e\u5177\u4f53\u7684\u660e\u786e\u662f\u4ec0\u4e48\u57fa\u7840\u53d8\u91cf\uff0c\u5728Java\uff0cC# \u7b49\u540e\u6765\u8bed\u8a00\u4e2d\uff0c\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e00\u601d\u7ef4\uff0c\u53c8\u7eb7\u7eb7\u7684\u521b\u5efa\u4e86object\u8fd9\u4e00\u6982\u5ff5\u6765\u89e3\u51b3\u7c7b\u578b\u63a8\u65ad\uff0c\u4e5f\u9010\u6e10\u53d1\u5c55\u51fa\u4e86\u5bf9\u8c61\u601d\u7ef4\u3002<\/p>\n<h1>\u603b\u7ed3<\/h1>\n<p>\u4ece\u5404\u79cd\u7f16\u7a0b\u8bed\u8a00\u5927\u6982\u7684\u4e00\u4e2a\u5206\u7c7b\u5e38\u8bc6\u800c\u8a00\uff0cC\u8bed\u8a00\u7684\u79cd\u79cd\u8ff9\u8c61\u786e\u5b9e\u8ba9\u5b83\u6709\u7740\u5c5e\u4e8e\u7b26\u5408\u5f31\u7c7b\u578b\u7684\u5224\u65ad\uff0c\u56e0\u800c\u6211\u66f4\u52a0\u8ba4\u53efC\u8bed\u8a00\u662f\u5f31\u7c7b\u578b\u7684\u8fd9\u4e00\u89c2\u70b9\uff0c\u4f46\u5728\u5b9e\u9645\u60c5\u51b5\u4e2d\uff0c\u6bcf\u4e00\u79cd\u8bed\u8a00\u90fd\u662f\u6709\u7740\u5404\u81ea\u4e0d\u540c\u7684\u7279\u70b9\u7684\uff0c\u5c31\u50cf\u4e24\u6816\u52a8\u7269\u7684\u5b58\u5728\u4e00\u6837\u6709\u7740\u5176\u81ea\u5df1\u7684\u751f\u6001\u4f4d\uff0c\u5c31C\u8bed\u8a00\u800c\u8a00\uff0c\u5176\u7075\u6d3b\u7684\u6307\u9488\u51b3\u5b9a\u4e86\u5b83\u7684\u751f\u6001\u4f4d\u3002\u8fc7\u5206\u8ffd\u9010\u5f31\u7c7b\u578b\u5f3a\u7c7b\u578b\u662f\u65e0\u610f\u4e49\u7684\u3002<\/p>\n<p>\u5c31\u62ffGoogle\uff1aC is weakly typed? \u6765\u7ed3\u675f\uff1a<\/p>\n<p><span>C is strongly typed in that the variable type must be specified when declaring the variable. However, C can also be regarded as weakly typed because\u00a0<\/span><b>users can convert data types through a cast and without compiler errors<\/b><span>.<\/span><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u5b66\u751f\u65f6\u4ee3\u751f\u6daf\uff0c\u8001\u5e08\u5e38\u5e38\u4f1a\u8bf4\u4e00\u4e2a\u8bed\u8a00\u662f\u5f3a\u7c7b\u578b\u8fd8\u662f\u5f31\u7c7b\u578b\uff0c\u6bd4\u5982\u8ba4\u4e3aC\u8bed\u8a00\u662f\u5f3a\u7c7b\u578b\uff0cPython\/Js\u662f [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[45],"tags":[33],"class_list":["post-1289","post","type-post","status-publish","format-standard","hentry","category-c","tag-c"],"views":2051,"_links":{"self":[{"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/posts\/1289","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1289"}],"version-history":[{"count":5,"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/posts\/1289\/revisions"}],"predecessor-version":[{"id":1351,"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/posts\/1289\/revisions\/1351"}],"wp:attachment":[{"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1289"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1289"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1289"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}