{"id":571,"date":"2015-11-01T16:25:34","date_gmt":"2015-11-01T08:25:34","guid":{"rendered":"http:\/\/yangwang.hk\/?p=571"},"modified":"2015-11-01T16:25:34","modified_gmt":"2015-11-01T08:25:34","slug":"3-7%e3%80%81%e6%9b%b4%e5%a4%9a%e7%9a%84%e5%b5%8c%e5%a5%97","status":"publish","type":"post","link":"https:\/\/yangwang.hk\/?p=571","title":{"rendered":"3.7\u3001\u66f4\u591a\u7684\u5d4c\u5957"},"content":{"rendered":"

\u5728\u4e0a\u4e00\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u7b80\u5355\u7684\u4e86\u89e3\u4e86if\u7684\u5d4c\u5957\u5199\u6cd5\u3002<\/p>\n

\u800c\u4e0eif\u7c7b\u4f3c\uff0c\u5faa\u73af\u7b49\u7ed3\u6784\u540c\u6837\u662f\u53ef\u4ee5\u8fdb\u884c\u5d4c\u5957\u7684\uff0c\u524d\u63d0\u7684\u4f60\u7684\u5199\u6cd5\u7b26\u5408\u8bed\u6cd5<\/p>\n

\u5728\u4eca\u5929\u7684\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u7ee7\u7eed\u770b\u5230if\u7684\u5d4c\u5957\uff0c\u540c\u65f6\u8fd8\u4f1a\u6709while\u7684\u5d4c\u5957\u3002<\/p>\n

\n

\u9996\u5148\u95ee\u4e00\u4e2a\u95ee\u9898\uff0c\u4f60\u6709\u6ca1\u6709\u5750\u8fc7\u51fa\u79df\u8f66\uff1f<\/p>\n

\u5927\u591a\u6570\u4eba\u7684\u56de\u7b54\u80af\u5b9a\u662f\u6709\u5440\uff01<\/p>\n

\u90a3\u4e48\u4f60\u5e94\u8be5\u77e5\u9053\uff0c\u51fa\u79df\u8f66\u7684\u8ba1\u8d39\u65b9\u5f0f\u662f\u548c\u8def\u7a0b\u7b49\u6709\u5173\u7684\u3002\u901a\u5e38\u6709\u4e00\u4e2a\u8d77\u6b65\u4ef7\uff0c\u5728\u4e00\u5b9a\u8ddd\u79bb\u5185\uff0c\u4e0d\u7ba1\u8dd1\u4e86\u591a\u8fdc\u90fd\u662f\u4e00\u4e2a\u4ef7\u683c\u3002<\/p>\n

\u5f53\u8d85\u8fc7\u4e00\u5b9a\u8ddd\u79bb\u65f6\u5c06\u6309\u7167\u5176\u4ed6\u7684\u65b9\u5f0f\u6536\u8d39\u3002<\/p>\n

\u4eca\u5929\u6211\u4eec\u5c31\u6765\u5199\u4e00\u4e2a\u201c\u51fa\u79df\u8f66\u201d\u8ba1\u8d39\u7684\u7a0b\u5e8f\uff0c\u8f93\u5165\u8f66\u5f00\u7684\u8ddd\u79bb\uff0c\u7b97\u51fa\u6211\u4eec\u9700\u8981\u652f\u4ed8\u7684\u4ef7\u683c\u3002<\/p>\n

\u5f53\u7136\u6536\u8d39\u7684\u65b9\u6cd5\u662f\u5c11\u4e0d\u4e86\u7684\uff0c\u5047\u8bbe\u67d0\u5e02\u7684\u51fa\u79df\u8f66\u8d77\u6b65\u4ef7\u4e3a6\u5143\uff0c\u57282km\u5185\u53ea\u6536\u8d77\u6b65\u4ef7\uff1b\u8d85\u51fa2km\u7684\uff0c\u5728\u5c0f\u4e8e10km\u7684\u90e8\u5206\u6309\u71671.5\u5143\/km\u6536\u8d39\uff0c\u5927\u4e8e10km\u7684\u6309\u71671\u5143\/km\u6536\u8d39\u3002<\/p>\n

\u8bf7\u9996\u5148\u81ea\u5df1\u5c1d\u8bd5\u5199\u51fa\u8fd9\u4e2a\u7a0b\u5e8f\uff01<\/strong><\/p>\n

\u4e0b\u9762\u7ed9\u51fa\u4e00\u4e2a\u53ef\u884c\u7684\u4f8b\u5b50<\/p>\n

\r\n#include <stdio.h>\r\n#include <stdlib.h>\r\n\r\n#define FLAG_DOWN_FARE       6              \/\/\u8d77\u6b65\u4ef76\u5143\r\n#define INITIATE_DISTANCE      2              \/\/\u8d77\u6b65\u8ddd\u79bb\u4e3a2km\r\n#define RATE_LESS_THAN_10    1.5           \/\/\u5c0f\u4e8e10km\u90e8\u5206\u7684\u8d39\u7387\r\n#define RATE_MORE_THAN_10  1            \/\/\u5927\u4e8e10km\u90e8\u5206\u7684\u8d39\u7387\r\n\r\nint main()\r\n{\r\n    double total= 0;                           \/\/\u603b\u4ef7\r\n    double distance  = 0;                  \/\/\u5f53\u7136\u662f\u8def\u7a0b\u4e86\r\n\r\n\r\n    scanf("%lf", &distance);     \/\/\u8f93\u5165\u603b\u4ef7\r\n\r\n    if(distance <= INITIATE_DISTANCE)\r\n    {\r\n        total = FLAG_DOWN_FARE;      \/\/\u5c0f\u4e8e\u8d77\u6b65\u8ddd\u79bb\uff0c\u5219\u53ea\u7528\u652f\u4ed8\u8d77\u6b65\u4ef7\r\n    }\r\n\r\n    else\r\n    {\r\n        if(distance <= 10.0)\r\n        {\r\n            total = FLAG_DOWN_FARE + (distance - INITIATE_DISTANCE) * RATE_LESS_THAN_10;\r\n        }\r\n\r\n        else\r\n        {\r\n            total = FLAG_DOWN_FARE + (10.0 - INITIATE_DISTANCE) * RATE_LESS_THAN_10 + (distance - 10.0) * RATE_MORE_THAN_10;\r\n        }\r\n    }\r\n\r\n    printf("Total: %.2f\\n", total);         \/\/\u8f93\u51fa\u603b\u4ef7\r\n    return 0;\r\n}\r\n<\/pre>\n
\u5728\u8fd9\u4e2a\u7a0b\u5e8f\u4e2d\uff0c\u6211\u4eec\u5c06\u8d77\u6b65\u4ef7\uff0c\u8d39\u7387\u7b49\u6570\u5b57\u4f7f\u7528\u4e86\u5b8f\u5e38\u91cf\u7684\u65b9\u5f0f\u6765\u66ff\u4ee3\uff0c\u8fd9\u662f\u4e00\u4e2a\u597d\u7684\u4e60\u60ef\u3002<\/p>\n
\u5728\u7f16\u7a0b\u4e2d\uff0c\u6211\u4eec\u5c06\u90a3\u4e9b\u76f4\u63a5\u5199\u5728\u6e90\u4ee3\u7801\u4e2d\u7684\u6570\u5b57\u79f0\u4e3a\u9b54\u672f\u6570\u5b57<\/strong>\uff08magic number\uff0c\u4e5f\u8bd1\u4e3a\u5e7b\u6570\uff09<\/p>\n
\u4f8b\u5982\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\u7528\u4e8eif\u5224\u65ad\u768410.0\u5c31\u662f\u4e00\u4e2a\u9b54\u672f\u6570\u5b57\u3002\u4e4b\u6240\u4ee5\u8fd9\u6837\u79f0\u547c\u5b83\uff0c\u662f\u56e0\u4e3a\u8fd9\u6837\u7684\u6570\u5b57\u8f83\u96be\u76f4\u63a5\u770b\u51fa\u4ed6\u7684\u542b\u4e49\uff0c\u5f53\u522b\u4eba\u9605\u8bfb\u4f60\u7684\u6e90\u4ee3\u7801\uff0c\u6216\u8005\u7b49\u4f60\u8fc7\u4e00\u5e74\u540e\u518d\u53bb\u9605\u8bfb\u4f60\u7f16\u5199\u7684\u6e90\u4ee3\u7801\u65f6\uff0c\u5f88\u53ef\u80fd\u5b8c\u5168\u65e0\u6cd5\u5f04\u6e05\u695a\u8fd9\u4e2a\u6570\u5b57\u7684\u542b\u4e49\uff01\u5230\u65f6\u5019\u4f60\u5c31\u771f\u7684\u53ea\u80fd\u76ef\u7740\u5c4f\u5e55\u54c8\u6c14\u4e86\uff0c\u7136\u540e\u611f\u53f9\u4e00\u53e5\u201c\u81f3\u5c11\u7a0b\u5e8f\u8fd8\u80fd\u7528\uff0c\u771f\u662f\u4e00\u4e2a\u9b54\u672f\u822c\u7684\u6570\u5b57\uff01\u201d<\/p>\n
\u4f7f\u7528\u4e86\u5b8f\uff0c\u5219\u5927\u5927\u589e\u52a0\u4e86\u7a0b\u5e8f\u7684\u53ef\u8bfb\u6027\uff0c\u56e0\u6b64\u6211\u4eec\u5e94\u8be5\u5c3d\u91cf\u51cf\u5c11\u5728\u7f16\u7a0b\u4e2d\u4f7f\u7528\u9b54\u672f\u6570\u5b57\u3002<\/p>\n
\u540c\u6837\uff0c\u8fd9\u4e2a\u7a0b\u5e8f\u8fd8\u80fd\u5199\u6210\u4e0b\u9762\u8fd9\u4e2a\u6837\u5b50\uff1a<\/p>\n
\r\n    if(distance <= INITIATE_DISTANCE)\r\n        total = FLAG_DOWN_FARE;      \/\/\u5c0f\u4e8e\u8d77\u6b65\u8ddd\u79bb\uff0c\u5219\u53ea\u7528\u652f\u4ed8\u8d77\u6b65\u4ef7\r\n    else if(distance <= 10.0)\r\n            total = FLAG_DOWN_FARE + (distance - INITIATE_DISTANCE) * RATE_LESS_THAN_10;\r\n        else\r\n            total = FLAG_DOWN_FARE + (10.0 - INITIATE_DISTANCE) * RATE_LESS_THAN_10 + (distance - 10.0) * RATE_MORE_THAN_10;\r\n<\/pre>\n
\u8fd9\u4e2a\u7a0b\u5e8f\u8f83\u4e3a\u7b80\u5355\uff0c\u6211\u4eec\u4fbf\u4e0d\u518d\u591a\u505a\u5206\u6790<\/p>\n
\u4e0b\u9762\u6211\u4eec\u6765\u8bd5\u4e00\u4e0bwhile\u5faa\u73af\u7684\u5d4c\u5957\uff1a\u5199\u4e00\u4e2a\u8f93\u51fa0-100\u7684\u7d20\u6570\u7684\u7a0b\u5e8f<\/p>\n
\u4e0d\u7528\u6211\u591a\u8bf4\uff0c\u4f60\u5e94\u8be5\u77e5\u9053\u7d20\u6570\u662f\u4ec0\u4e48\uff08\u5b83\u7684\u53e6\u4e00\u4e2a\u79f0\u547c\u662f\u8d28\u6570\uff09\uff0c\u5f53\u524d\u4eba\u7c7b\u8fd8\u6ca1\u6709\u627e\u5230\u4e00\u4e2a\u7279\u5b9a\u7684\u516c\u5f0f\u7528\u4e8e\u76f4\u63a5\u5224\u65ad\u4e00\u4e2a\u6570\u662f\u5426\u662f\u4e00\u4e2a\u7d20\u6570\uff0c\u552f\u4e00\u7684\u65b9\u6cd5\u662f\u4e00\u4e2a\u4e2a\u53bb\u8bd5\uff0c\u5982\u679c\u5b83\u65e0\u6cd5\u88ab\u9664\u81ea\u8eab\u548c1\u4ee5\u5916\u7684\u6570\u6574\u9664\uff0c\u90a3\u4e48\u5b83\u5c31\u662f\u4e00\u4e2a\u7d20\u6570\u3002<\/p>\n
\u8bf7\u8bd5\u7740\u5199\u51fa\u4ee3\u7801<\/p>\n
\r\n#include <stdio.h>\r\n#include <stdlib.h>\r\n\r\nint main()\r\n{\r\n    int i = 3;\r\n    int j = 2;\r\n\r\n    printf("2\\n");              \/\/\u56e0\u4e3a2\u4e0d\u5728\u5faa\u73af\u4e2d\uff0c\u56e0\u6b64\u8981\u5355\u72ec\u8f93\u51fa\r\n\r\n    while(i <= 1000)\r\n    {\r\n        while(j < i)\r\n        {\r\n            if(i % j == 0)      \/\/\u8bf4\u660e\u88ab\u5c0f\u4e8e\u81ea\u8eab\u7684\u6570\u6574\u9664\u4e86\uff0c\u56e0\u6b64\u4e0d\u662f\u7d20\u4e66\uff0c\u76f4\u63a5\u8df3\u51fa\u6b64\u5c42\u5faa\u73af\r\n            break;\r\n            ++j;\r\n        }\r\n        if(i == j)                  \/\/\u5982\u679c\u4e24\u4e2a\u6570\u76f8\u7b49\uff0c\u8bf4\u660e\u65e0\u6cd5\u88ab\u5c0f\u4e8e\u81ea\u8eab\u7684\u6570\u6574\u9664\uff0c\u56e0\u800c\u662f\u7d20\u4e66\r\n        printf("%d\\n", i);\r\n        ++i;\r\n        j = 2;                      \/\/\u5c06\u9664\u6570\u91cd\u65b0\u8bbe\u4e3a2\r\n    }\r\n\r\n    return 0;\r\n}\r\n<\/pre>\n
\u8fd9\u662f\u4e00\u4e2a\u4f8b\u5b50\uff0c\u867d\u7136\u5b83\u53ef\u4ee5\u6267\u884c\uff0c\u4e5f\u5411\u6211\u4eec\u5c55\u793a\u4e86while\u5d4c\u5957\uff0c\u4f46\u662f\u8fd9\u4e0d\u662f\u4e00\u4e2a\u8f83\u597d\u7684\u7b54\u6848\uff0c\u56e0\u4e3a\u6b64\u7a0b\u5e8f\u6548\u7387\u6bd4\u8f83\u4f4e<\/p>\n
\u8bf7\u81ea\u884c\u601d\u8003\u5982\u4f55\u4fee\u6539\u8fd9\u4e2a\u7a0b\u5e8f\u4f7f\u4ed6\u7684\u6548\u7387\u63d0\u9ad8\uff1f<\/p>\n
\u5173\u4e8e\u6548\u7387\u548c\u7b97\u6cd5\u7684\u95ee\u9898\uff0c\u6211\u4eec\u5c06\u5728\u540e\u9762\u4e13\u95e8\u7684\u5730\u65b9\u8ba8\u8bba<\/p>\n
\u597d\u4e86\uff0c\u5173\u4e8e\u5d4c\u5957\u7684\u95ee\u9898\u6211\u4eec\u5c31\u8bb2\u5230\u8fd9\u91cc\uff0c\u5269\u4e0b\u7684\u5c31\u662f\u7b49\u4f60\u53bb\u7ec3\u4e60\u638c\u63e1\u4e86\uff01<\/p>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
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