1. 把打印信息输出到指定的文件里。

#include <stdio.h>
#include <stdlib.h> freopen("log.txt", "w", stdout);
for (int i = ; i < ; i++)
{
printf("%02X ", i); }
printf("ddddddd\r\n");
printf("tttttt1");
freopen("CON", "w", stdout);
05-11 20:17