{"id":309907,"date":"2024-05-20T21:37:34","date_gmt":"2024-05-20T13:37:34","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/309907.html"},"modified":"2024-05-20T21:37:41","modified_gmt":"2024-05-20T13:37:41","slug":"c-%e4%b8%adgoto-loop%e6%80%8e%e4%b9%88%e6%94%b9%e5%86%99%e6%9b%bf%e4%bb%a3","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/309907.html","title":{"rendered":"C \u4e2dgoto loop\u600e\u4e48\u6539\u5199\u66ff\u4ee3"},"content":{"rendered":"

\"C<\/p>\n

C\u8bed\u8a00\u4e2d\u7684goto<\/code>\u8bed\u53e5\u53ef\u4ee5\u7528\u4e8e\u8df3\u8f6c\u5230\u7a0b\u5e8f\u7684\u4efb\u610f\u6807\u8bb0\uff08label\uff09\uff0c\u5b9e\u73b0\u975e\u987a\u5e8f\u7684\u4ee3\u7801\u6267\u884c\uff0c\u5b83\u5e38\u88ab\u7528\u4e8e\u5b9e\u73b0\u5faa\u73af\u3002\u7136\u800c\uff0c\u4f7f\u7528goto<\/code>\u53ef\u80fd\u5bfc\u81f4\u4ee3\u7801\u7ed3\u6784\u6df7\u4e71\u3001\u96be\u4ee5\u7406\u89e3\u548c\u7ef4\u62a4\uff0c\u56e0\u6b64\u5efa\u8bae\u7528\u5176\u4ed6\u7ed3\u6784\u5316\u8bed\u53e5\u66ff\u4ee3goto<\/code>\u3002\u5177\u4f53\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528while<\/code>\u5faa\u73af\u3001for<\/code>\u5faa\u73af\u4ee5\u53cado-while<\/code>\u5faa\u73af<\/strong>\u3002\u5176\u4e2d\u4f7f\u7528while<\/code>\u5faa\u73af\u662f\u4e00\u79cd\u975e\u5e38\u76f4\u89c2\u7684\u66ff\u4ee3\u65b9\u6cd5\uff0c\u56e0\u4e3a\u5b83\u5141\u8bb8\u57fa\u4e8e\u6761\u4ef6\u53cd\u590d\u6267\u884c\u4ee3\u7801\u5757\uff0c\u4e0egoto loop<\/code>\u4ea7\u751f\u7684\u6548\u679c\u76f8\u4f3c\u3002<\/p>\n<\/p>\n

\u4e00\u3001WHILE\u5faa\u73af\u66ff\u4ee3<\/h3>\n<\/p>\n

goto<\/code>\u5faa\u73af\u53ef\u4ee5\u7528while<\/code>\u5faa\u73af\u6539\u5199\uff0c\u56e0\u4e3awhile<\/code>\u5faa\u73af\u672c\u8d28\u4e0a\u5c31\u662f\u4e00\u79cd\u53ea\u8981\u6761\u4ef6\u4e3a\u771f\u5c31\u6301\u7eed\u6267\u884c\u7684\u7ed3\u6784\u3002\u4ee5\u4e0b\u662f\u5c06goto<\/code>\u66ff\u6362\u4e3awhile<\/code>\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n

\/\/ \u4f7f\u7528goto\u7684\u539f\u4ee3\u7801\uff1a<\/p>\n
int i = 0;<\/p>\n
loop:<\/p>\n
if (i < 10) {<\/p>\n
    \/\/ ... \u8fd9\u91cc\u662f\u5faa\u73af\u4f53\u4e2d\u8981\u6267\u884c\u7684\u4ee3\u7801 ...<\/p>\n
    i++;<\/p>\n
    goto loop;<\/p>\n
}<\/p>\n
\/\/ \u6539\u5199\u4e3awhile\u5faa\u73af\u7684\u4ee3\u7801\uff1a<\/p>\n
int i = 0;<\/p>\n
while (i < 10) {<\/p>\n
    \/\/ ... \u8fd9\u91cc\u662f\u5faa\u73af\u4f53\u4e2d\u8981\u6267\u884c\u7684\u4ee3\u7801 ...<\/p>\n
    i++;<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u6b64\u4f8b\u4e2d\uff0cwhile<\/code>\u5faa\u73af\u66f4\u52a0\u6e05\u6670\u4e14\u6613\u4e8e\u7406\u89e3\u3002<\/p>\n<\/p>\n
\u4e8c\u3001FOR\u5faa\u73af\u66ff\u4ee3<\/h3>\n<\/p>\n
for<\/code>\u5faa\u73af\u662f\u4e00\u79cd\u7ed3\u6784\u5316\u7684\u3001\u4e13\u95e8\u7528\u4e8e\u5faa\u73af\u7684\u8bed\u53e5\uff0c\u7279\u522b\u9002\u5408\u6267\u884c\u5df2\u77e5\u6b21\u6570\u7684\u5faa\u73af\u3002\u53ef\u4ee5\u628agoto<\/code>\u5faa\u73af\u6539\u4e3afor<\/code>\u5faa\u73af\uff0c\u5c24\u5176\u5f53\u4f60\u80fd\u591f\u786e\u5b9a\u5faa\u73af\u7684\u8ba1\u6570\u5668\u548c\u6761\u4ef6\u65f6\u3002<\/p>\n<\/p>\n
\/\/ \u4f7f\u7528goto\u7684\u539f\u4ee3\u7801\uff1a<\/p>\n
int i = 0;<\/p>\n
loop:<\/p>\n
if (i < 10) {<\/p>\n
    \/\/ ... \u8fd9\u91cc\u662f\u5faa\u73af\u4f53\u4e2d\u8981\u6267\u884c\u7684\u4ee3\u7801 ...<\/p>\n
    i++;<\/p>\n
    goto loop;<\/p>\n
}<\/p>\n
\/\/ \u6539\u5199\u4e3afor\u5faa\u73af\u7684\u4ee3\u7801\uff1a<\/p>\n
for (int i = 0; i < 10; i++) {<\/p>\n
    \/\/ ... \u8fd9\u91cc\u662f\u5faa\u73af\u4f53\u4e2d\u8981\u6267\u884c\u7684\u4ee3\u7801 ...<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e09\u3001DO-WHILE\u5faa\u73af\u66ff\u4ee3<\/h3>\n<\/p>\n
do-while<\/code>\u5faa\u73af\u4e0ewhile<\/code>\u5faa\u73af\u76f8\u4f3c\uff0c\u533a\u522b\u5728\u4e8edo-while<\/code>\u5faa\u73af\u81f3\u5c11\u6267\u884c\u4e00\u6b21\u5faa\u73af\u4f53\uff0c\u56e0\u4e3a\u5b83\u662f\u5148\u6267\u884c\u5faa\u73af\u4f53\u4ee3\u7801\uff0c\u7136\u540e\u5224\u65ad\u6761\u4ef6\u3002\u5982\u679c\u9700\u8981\u81f3\u5c11\u6267\u884c\u4e00\u6b21\u5faa\u73af\u4f53\uff0c\u53ef\u4ee5\u9009\u62e9do-while<\/code>\u66ff\u4ee3goto<\/code>\u3002<\/p>\n<\/p>\n
\/\/ \u4f7f\u7528goto\u7684\u539f\u4ee3\u7801\uff1a<\/p>\n
int i = 0;<\/p>\n
loop:<\/p>\n
\/\/ ... \u8fd9\u91cc\u662f\u5faa\u73af\u4f53\u4e2d\u8981\u6267\u884c\u7684\u4ee3\u7801 ...<\/p>\n
i++;<\/p>\n
if (i < 10) {<\/p>\n
    goto loop;<\/p>\n
}<\/p>\n
\/\/ \u6539\u5199\u4e3ado-while\u5faa\u73af\u7684\u4ee3\u7801\uff1a<\/p>\n
int i = 0;<\/p>\n
do {<\/p>\n
    \/\/ ... \u8fd9\u91cc\u662f\u5faa\u73af\u4f53\u4e2d\u8981\u6267\u884c\u7684\u4ee3\u7801 ...<\/p>\n
    i++;<\/p>\n
} while (i < 10);<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u56db\u3001\u5d4c\u5957\u5faa\u73af\u548c\u6761\u4ef6\u66ff\u4ee3<\/h3>\n<\/p>\n
\u6709\u65f6goto<\/code>\u8df3\u8f6c\u53ef\u80fd\u4f1a\u7528\u4e8e\u8df3\u51fa\u591a\u5c42\u5faa\u73af\u6216\u6267\u884c\u590d\u6742\u7684\u6761\u4ef6\u5206\u652f\u3002\u800c\u5d4c\u5957\u5faa\u73af\u6216\u989d\u5916\u7684\u6761\u4ef6\u5224\u65ad\u53ef\u4ee5\u4f5c\u4e3a\u66ff\u4ee3\u65b9\u6848\u3002<\/p>\n<\/p>\n
\/\/ \u4f7f\u7528goto\u7684\u539f\u4ee3\u7801\uff1a<\/p>\n
for (int i = 0; i < 10; i++) {<\/p>\n
    for (int j = 0; j < 10; j++) {<\/p>\n
        if (\u67d0\u4e2a\u7279\u5b9a\u6761\u4ef6) {<\/p>\n
            goto end;<\/p>\n
        }<\/p>\n
        \/\/ ... \u5176\u4ed6\u4ee3\u7801 ...<\/p>\n
    }<\/p>\n
}<\/p>\n
end:<\/p>\n
\/\/ \u6539\u5199\u4e3a\u5d4c\u5957\u5faa\u73af\u548c\u6761\u4ef6\u7684\u4ee3\u7801\uff1a<\/p>\n
int i, j;<\/p>\n
int found = 0;  \/\/ \u65b0\u589e\u53d8\u91cf\u4ee5\u63a7\u5236\u5faa\u73af<\/p>\n
for (i = 0; i < 10 && !found; i++) {<\/p>\n
    for (j = 0; j < 10 && !found; j++) {<\/p>\n
        if (\u67d0\u4e2a\u7279\u5b9a\u6761\u4ef6) {<\/p>\n
            found = 1;<\/p>\n
        }<\/p>\n
        \/\/ ... \u5176\u4ed6\u4ee3\u7801 ...<\/p>\n
    }<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5f15\u5165\u4e86found<\/code>\u53d8\u91cf\u6765\u63a7\u5236\u662f\u5426\u7ee7\u7eed\u6267\u884c\u5916\u5c42\u548c\u5185\u5c42\u7684\u5faa\u73af\u3002<\/p>\n<\/p>\n
\u5f53\u4f60\u66ff\u4ee3goto<\/code>\u8bed\u53e5\u65f6\uff0c\u91cd\u8981\u7684\u662f\u8981\u660e\u786e\u4ee3\u7801\u7684\u610f\u56fe\u5e76\u786e\u4fdd\u65b0\u7684\u7ed3\u6784\u5316\u66ff\u4ee3\u65b9\u6848\u80fd\u591f\u6e05\u6670\u5730\u4f20\u8fbe\u76f8\u540c\u7684\u903b\u8f91\u3002\u8fd9\u901a\u5e38\u4f1a\u5bfc\u81f4\u66f4\u52a0\u53ef\u8bfb\u3001\u53ef\u7ef4\u62a4\u7684\u4ee3\u7801\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
1. \u5982\u4f55\u66ff\u4ee3C\u4e2d\u7684goto loop\u8bed\u53e5\uff1f<\/strong><\/p>\n
\u5728C\u8bed\u8a00\u4e2d\uff0c\u4f7f\u7528goto\u8bed\u53e5\u53ef\u4ee5\u8df3\u8f6c\u5230\u4ee3\u7801\u4e2d\u7684\u6807\u8bb0\u4f4d\u7f6e\uff0c\u4f46\u5b83\u7ecf\u5e38\u88ab\u8ba4\u4e3a\u662f\u4e0d\u826f\u7684\u7f16\u7801\u5b9e\u8df5\u3002\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u66ff\u4ee3goto\u8bed\u53e5\uff0c\u4f7f\u4ee3\u7801\u66f4\u52a0\u53ef\u8bfb\u548c\u53ef\u7ef4\u62a4\u3002<\/p>\n
\u4e00\u79cd\u66ff\u4ee3\u65b9\u6848\u662f\u4f7f\u7528\u5faa\u73af\u6765\u6a21\u62df\u8df3\u8f6c\u3002\u53ef\u4ee5\u4f7f\u7528while\u3001do-while\u6216for\u5faa\u73af\uff0c\u6839\u636e\u6761\u4ef6\u5224\u65ad\u662f\u5426\u9700\u8981\u7ee7\u7eed\u5faa\u73af\u56de\u5230\u6307\u5b9a\u4f4d\u7f6e\u3002\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u4f7f\u4ee3\u7801\u66f4\u52a0\u7ed3\u6784\u5316\uff0c\u5e76\u4e14\u7b26\u5408\u5e38\u89c4\u7684\u7f16\u7801\u89c4\u8303\u3002<\/p>\n
2. \u662f\u5426\u53ef\u4ee5\u4f7f\u7528\u51fd\u6570\u8c03\u7528\u6765\u66ff\u4ee3C\u4e2d\u7684goto loop\u8bed\u53e5\uff1f<\/strong><\/p>\n
\u662f\u7684\uff0c\u51fd\u6570\u8c03\u7528\u662f\u53e6\u4e00\u79cd\u66ff\u4ee3goto\u8bed\u53e5\u7684\u65b9\u6cd5\u3002\u53ef\u4ee5\u5c06\u5faa\u73af\u4f53\u4f5c\u4e3a\u4e00\u4e2a\u72ec\u7acb\u7684\u51fd\u6570\uff0c\u901a\u8fc7\u9012\u5f52\u6216\u8fed\u4ee3\u7684\u65b9\u5f0f\u8fdb\u884c\u8c03\u7528\u3002\u8fd9\u6837\u53ef\u4ee5\u4f7f\u4ee3\u7801\u66f4\u52a0\u6e05\u6670\uff0c\u5e76\u4e14\u4f7f\u5faa\u73af\u903b\u8f91\u66f4\u6613\u4e8e\u7406\u89e3\u548c\u4fee\u6539\u3002<\/p>\n
\u4f7f\u7528\u51fd\u6570\u8c03\u7528\u7684\u597d\u5904\u662f\u53ef\u4ee5\u5c06\u5faa\u73af\u4f53\u7684\u4ee3\u7801\u5c01\u88c5\u5728\u51fd\u6570\u4e2d\uff0c\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u53ef\u590d\u7528\u6027\u3002\u53e6\u5916\uff0c\u51fd\u6570\u8c03\u7528\u8fd8\u53ef\u4ee5\u4f7f\u7a0b\u5e8f\u7684\u7ed3\u6784\u66f4\u52a0\u6a21\u5757\u5316\uff0c\u6613\u4e8e\u7ef4\u62a4\u548c\u6269\u5c55\u3002<\/p>\n
3. \u662f\u5426\u53ef\u4ee5\u4f7f\u7528\u6761\u4ef6\u8bed\u53e5\u6765\u66ff\u4ee3C\u4e2d\u7684goto loop\u8bed\u53e5\uff1f<\/strong><\/p>\n
\u662f\u7684\uff0c\u6761\u4ef6\u8bed\u53e5\u4e5f\u53ef\u4ee5\u7528\u6765\u66ff\u4ee3C\u4e2d\u7684goto loop\u8bed\u53e5\u3002\u53ef\u4ee5\u4f7f\u7528if\u8bed\u53e5\u6216switch\u8bed\u53e5\u6765\u6839\u636e\u6761\u4ef6\u5224\u65ad\u662f\u5426\u9700\u8981\u91cd\u65b0\u6267\u884c\u6307\u5b9a\u7684\u4ee3\u7801\u5757\u3002<\/p>\n
\u6761\u4ef6\u8bed\u53e5\u53ef\u4ee5\u4f7f\u4ee3\u7801\u66f4\u52a0\u7ed3\u6784\u5316\uff0c\u4f7f\u5faa\u73af\u903b\u8f91\u66f4\u5bb9\u6613\u7406\u89e3\u3002\u4f46\u662f\uff0c\u4f7f\u7528\u6761\u4ef6\u8bed\u53e5\u66ff\u4ee3goto loop\u8bed\u53e5\u53ef\u80fd\u4f1a\u589e\u52a0\u4ee3\u7801\u7684\u590d\u6742\u6027\uff0c\u56e0\u6b64\u9700\u8981\u8c28\u614e\u4f7f\u7528\uff0c\u5e76\u786e\u4fdd\u903b\u8f91\u7684\u6b63\u786e\u6027\u548c\u4e00\u81f4\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"C\u8bed\u8a00\u4e2d\u7684goto\u8bed\u53e5\u53ef\u4ee5\u7528\u4e8e\u8df3\u8f6c\u5230\u7a0b\u5e8f\u7684\u4efb\u610f\u6807\u8bb0\uff08label\uff09\uff0c\u5b9e\u73b0\u975e\u987a\u5e8f\u7684\u4ee3\u7801\u6267\u884c\uff0c\u5b83\u5e38\u88ab\u7528\u4e8e\u5b9e\u73b0\u5faa\u73af\u3002\u7136 […]","protected":false},"author":3,"featured_media":309917,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/309907"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=309907"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/309907\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/309917"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=309907"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=309907"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=309907"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}