69,382
社区成员
发帖
与我相关
我的任务
分享
#include <stdio.h>
int main()
{
FILE *fp;
fp = fopen("test.cfg", "r+");
fseek(fp, 0, SEEK_SET);
char alarmBuf[6] = "ALARM!";
fwrite(alarmBuf, sizeof(alarmBuf), 1, fp);
fclose(fp);
return 0;
}