{"id":1225,"date":"2026-05-02T15:28:42","date_gmt":"2026-05-02T07:28:42","guid":{"rendered":"http:\/\/wordpress.fangt.online\/?p=1225"},"modified":"2026-05-02T15:28:42","modified_gmt":"2026-05-02T07:28:42","slug":"%e5%85%b6%e4%bb%96%e7%a8%8b%e5%ba%8f%e7%bb%93%e6%9e%84","status":"publish","type":"post","link":"http:\/\/wordpress.fangt.online\/index.php\/2026\/05\/02\/%e5%85%b6%e4%bb%96%e7%a8%8b%e5%ba%8f%e7%bb%93%e6%9e%84\/","title":{"rendered":"\u5176\u4ed6\u7a0b\u5e8f\u7ed3\u6784"},"content":{"rendered":"\n

switch\u5206\u652f\u7ed3\u6784\u8bed\u53e5<\/h2>\n\n\n\n

\u57fa\u672c\u8bed\u6cd5<\/h3>\n\n\n\n
switch(\u88ab\u9009\u53d8\u91cf) {\n    case \u503c1:\n        \/\/ \u4ee3\u7801\u57571\n        break;\n    case \u503c2:\n        \/\/ \u4ee3\u7801\u57572\n        break;\n    case \u503c3:\n        \/\/ \u4ee3\u7801\u57573\n        break;\n    default:\n        \/\/ \u9ed8\u8ba4\u4ee3\u7801\u5757\n}<\/code><\/pre>\n\n\n\n
\u7279\u70b9<\/h3>\n\n\n\n
    \n
  • \u88ab\u9009\u53d8\u91cf\u5fc5\u987b\u662f\u6574\u578b\u6216\u679a\u4e3e\u7c7b\u578b\uff08\u80fd\u591f\u51c6\u786e\u5224\u65ad\u76f8\u7b49\u7684\u7c7b\u578b\uff09<\/li>\n\n\n\n
  • case\u540e\u9762\u5fc5\u987b\u662f\u5e38\u91cf\u8868\u8fbe\u5f0f\uff08\u786e\u5b9a\u7684\u503c\uff09<\/li>\n\n\n\n
  • break\u53ef\u4ee5\u4e0d\u5199\uff0c\u672c\u8d28\u4e0abreak\u7528\u4e8e\u8df3\u51faswitch\u7ed3\u6784\uff0c\u4e0d\u5199break\u4f1a\u7ee7\u7eed\u6267\u884c\u4e0b\u4e00\u4e2acase\u4e2d\u7684\u4ee3\u7801\uff08\u7a7f\u900f\u6267\u884c\uff09<\/li>\n\n\n\n
  • default\u662f\u53ef\u6709\u53ef\u65e0\uff0c\u5f53\u6240\u6709case\u90fd\u4e0d\u5339\u914d\u65f6\u6267\u884c\uff0c\u7c7b\u4f3celse<\/li>\n<\/ul>\n\n\n\n
    if\u4e0eswitch\u7684\u533a\u522b<\/h3>\n\n\n\n
    \u5bf9\u6bd4\u7ef4\u5ea6<\/th>if-else if<\/th>switch<\/th><\/tr><\/thead>
    \u6761\u4ef6\u7c7b\u578b<\/strong><\/td>\u4efb\u610f\u5e03\u5c14\u8868\u8fbe\u5f0f\uff08\u53ef\u590d\u6742\uff09<\/td>\u53ea\u80fd\u6574\u578b\u3001\u5b57\u7b26\u3001\u679a\u4e3e<\/td><\/tr>
    \u6bd4\u8f83\u65b9\u5f0f<\/strong><\/td>\u76f8\u7b49\u3001\u4e0d\u7b49\u3001\u5927\u5c0f\u6bd4\u8f83<\/td>\u53ea\u80fd\u76f8\u7b49\u6bd4\u8f83<\/td><\/tr>
    \u6267\u884c\u65b9\u5f0f<\/strong><\/td>\u987a\u5e8f\u5224\u65ad\uff0c\u627e\u5230\u771f\u4e3a\u6b62<\/td>\u76f4\u63a5\u8df3\u8f6c\u5230\u5339\u914d\u7684 case<\/td><\/tr>
    \u6027\u80fd<\/strong><\/td>O(n) \u65f6\u95f4\uff0cn \u662f\u5206\u652f\u6570<\/td>\u7f16\u8bd1\u5668\u53ef\u4f18\u5316\u4e3a O(1) \u8df3\u8f6c\u8868<\/td><\/tr>
    \u9002\u7528\u573a\u666f<\/strong><\/td>\u6761\u4ef6\u590d\u6742\u3001\u6709\u8303\u56f4\u5224\u65ad<\/td>\u56fa\u5b9a\u503c\u5339\u914d\u3001\u5206\u652f\u591a<\/td><\/tr>
    \u53ef\u8bfb\u6027<\/strong><\/td>\u6761\u4ef6\u590d\u6742\u65f6\u6e05\u6670<\/td>\u5206\u652f\u591a\u4e14\u56fa\u5b9a\u503c\u65f6\u6e05\u6670<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
    while\u5faa\u73af\u7ed3\u6784\u8bed\u53e5<\/h2>\n\n\n\n
    \u57fa\u672c\u8bed\u6cd5<\/h3>\n\n\n\n
    while(\u6761\u4ef6) {\n    \/\/ \u5faa\u73af\u4f53\n    \/\/ \u9700\u8981\u6539\u53d8 \u6761\u4ef6\u76f8\u5173\u53d8\u91cf\uff0c\u5426\u5219\u53ef\u80fd\u65e0\u9650\u5faa\u73af\n}<\/code><\/pre>\n\n\n\n
    \u6267\u884c\u6d41\u7a0b<\/p>\n\n\n\n
      \n
    1. \u68c0\u67e5\u6761\u4ef6\u662f\u5426\u4e3a\u771f<\/li>\n\n\n\n
    2. \u5982\u679c\u6761\u4ef6\u4e3a\u771f\uff0c\u6267\u884c\u5faa\u73af\u4f53\uff08\u901a\u5e38\u5faa\u73af\u4f53\u4e2d\u8981\u6709\u66f4\u65b0\u6761\u4ef6\u53d8\u91cf\u7684\u529f\u80fd\uff09<\/li>\n\n\n\n
    3. \u6bcf\u6b21\u6267\u884c\u5b8c\u5faa\u73af\u4f53\uff0c\u518d\u6b21\u68c0\u67e5\u6761\u4ef6\uff0c\u76f4\u5230\u6761\u4ef6\u4e3a\u5047<\/li>\n<\/ol>\n\n\n\n
      \u793a\u4f8b<\/p>\n\n\n\n
      \/\/ \u793a\u4f8b1\uff1a\u57fa\u672c\u7528\u6cd5\nint i = 1;\nwhile(i <= 5) {\n    cout << i << \" \";\n    i++;  \/\/ \u91cd\u8981\uff1a\u66f4\u65b0\u6761\u4ef6\u53d8\u91cf\n}\n\/\/ \u8f93\u51fa\uff1a1 2 3 4 5\n\n\/\/ \u793a\u4f8b2\uff1a\u65e0\u9650\u5faa\u73af\uff08\u901a\u5e38\u914d\u5408 break\uff09\nint count = 0;\nwhile(true) {\n    count++;\n    if(count >= 10) {\n        break;  \/\/ \u8df3\u51fa\u5faa\u73af\n    }\n}\n\n\/\/ \u793a\u4f8b3\uff1a\u8f93\u5165\u9a8c\u8bc1\nint num;\ncout << \"\u8bf7\u8f93\u51651-10\u7684\u6570\uff1a\";\ncin >> num;\nwhile(num < 1 || num > 10) {\n    cout << \"\u8f93\u5165\u9519\u8bef\uff0c\u91cd\u65b0\u8f93\u5165\uff1a\";\n    cin >> num;\n}<\/code><\/pre>\n\n\n\n
      do-while\u5faa\u73af\u7ed3\u6784\u8bed\u53e5<\/h2>\n\n\n\n
      \u57fa\u672c\u8bed\u6cd5<\/h3>\n\n\n\n
      do {\n    \/\/ \u5faa\u73af\u4f53\n    \/\/ \u81f3\u5c11\u6267\u884c\u4e00\u6b21\n} while(\u6761\u4ef6);  \/\/ \u6ce8\u610f\u5206\u53f7\uff01<\/code><\/pre>\n\n\n\n
      \u7279\u70b9<\/p>\n\n\n\n
        \n
      • \u5148\u6267\u884c\uff0c\u540e\u5224\u65ad\uff1a\u5faa\u73af\u4f53\u81f3\u5c11\u4f1a\u6267\u884c\u4e00\u6b21<\/li>\n\n\n\n
      • \u9002\u7528\u4e8e\u9700\u8981\u5148\u6267\u884c\u518d\u68c0\u67e5\u7684\u60c5\u51b5<\/li>\n\n\n\n
      • \u672b\u5c3e\u5fc5\u987b\u6709\u5206\u53f7<\/li>\n<\/ul>\n\n\n\n
        for\u3001while\u4e0edo-while\u7684\u533a\u522b<\/h3>\n\n\n\n
        \u5faa\u73af\u7c7b\u578b<\/th>\u6267\u884c\u6b21\u6570<\/th>\u68c0\u67e5\u65f6\u673a<\/th>\u9002\u7528\u573a\u666f<\/th><\/tr><\/thead>
        for<\/strong><\/td>0\u6b21\u6216\u591a\u6b21<\/td>\u5148\u68c0\u67e5\uff0c\u540e\u6267\u884c<\/td>\u5df2\u77e5\u5faa\u73af\u6b21\u6570\u3001\u904d\u5386<\/td><\/tr>
        while<\/strong><\/td>0\u6b21\u6216\u591a\u6b21<\/td>\u5148\u68c0\u67e5\uff0c\u540e\u6267\u884c<\/td>\u6761\u4ef6\u63a7\u5236\u3001\u53ef\u80fd\u4e0d\u6267\u884c<\/td><\/tr>
        do-while<\/strong><\/td>\u81f3\u5c111\u6b21<\/strong><\/td>\u5148\u6267\u884c\uff0c\u540e\u68c0\u67e5<\/strong><\/td>\u5fc5\u987b\u81f3\u5c11\u6267\u884c\u4e00\u6b21<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
        \u7406\u8bba\u4e0a\uff0c\u5728\u4efb\u4f55\u60c5\u51b5\u4e0b\uff0cfor\u548cwhile\u90fd\u80fd\u591f\u76f8\u4e92\u66ff\u6362\uff0cdo-while\u4e0d\u884c<\/p>\n","protected":false},"excerpt":{"rendered":"
        switch\u5206\u652f\u7ed3\u6784\u8bed\u53e5 \u57fa\u672c\u8bed\u6cd5 \u7279\u70b9 if\u4e0eswitch\u7684\u533a\u522b \u5bf9\u6bd4\u7ef4\u5ea6 if-else if switc […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[61],"tags":[],"class_list":["post-1225","post","type-post","status-publish","format-standard","hentry","category-zl"],"_links":{"self":[{"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/posts\/1225","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/comments?post=1225"}],"version-history":[{"count":1,"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/posts\/1225\/revisions"}],"predecessor-version":[{"id":1226,"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/posts\/1225\/revisions\/1226"}],"wp:attachment":[{"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/media?parent=1225"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/categories?post=1225"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/tags?post=1225"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}