C++涓殑freopen鍑芥暟鐢ㄤ簬灏嗘爣鍑嗚緭鍏?杈撳嚭閲嶅畾鍚戝埌鎸囧畾鐨勬枃浠躲€?/p>

浣跨敤freopen鍑芥暟鐨勪竴鑸娉曞涓嬶細

FILE *freopen(const char *filename, const char *mode, FILE *stream);

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渚嬪锛岃灏嗘爣鍑嗚緭鍏ラ噸瀹氬悜鍒颁竴涓悕涓?code>input.txt鐨勬枃浠朵腑锛屽彲浠ヤ娇鐢ㄤ互涓嬩唬鐮侊細

#include <cstdio>
int main() {
// 灏嗘爣鍑嗚緭鍏ラ噸瀹氬悜鍒癷nput.txt鏂囦欢
freopen("input.txt", "r", stdin);
// 璇诲彇鏂囦欢涓殑鍐呭
int num;
while (scanf("%d", &num) != EOF) {
printf("璇诲彇鍒扮殑鏁板瓧锛?d\n", num);
}
return 0;
}

鍚屾牱鍦帮紝瑕佸皢鏍囧噯杈撳嚭閲嶅畾鍚戝埌涓€涓悕涓?code>output.txt鐨勬枃浠朵腑锛屽彲浠ヤ娇鐢ㄤ互涓嬩唬鐮侊細

#include <cstdio>
int main() {
// 灏嗘爣鍑嗚緭鍑洪噸瀹氬悜鍒皁utput.txt鏂囦欢
freopen("output.txt", "w", stdout);
// 杈撳嚭鍐呭鍒版枃浠?/span>
printf("Hello, World!\n");
return 0;
}

闇€瑕佹敞鎰忕殑鏄紝鍦ㄤ娇鐢?code>freopen鍑芥暟涔嬪悗锛屽簲璇ラ伩鍏嶅啀娆′娇鐢?code>cin鍜?code>cout绛夋爣鍑嗚緭鍏?杈撳嚭娴佸璞★紝鑰屽簲璇ヤ娇鐢?code>scanf鍜?code>printf绛夊嚱鏁版潵杩涜杈撳叆杈撳嚭鎿嶄綔銆?/p>