writeinfo

 /*****往filepath裏面寫messageStr******/
void writeinfo(char *filepath,char *messageStr)
{
 FILE *stream;
 stream=freopen(filepath,"a",stderr);
 fprintf(stream,messageStr);
 fclose(stream);
}
/*****往filepath裏寫messageStr，用覆蓋的寫法******/
void writeinfo_cover(char *filepath,char *messageStr)
{
 FILE *stream;
 stream=freopen(filepath,"w",stderr);
 fprintf(stream,messageStr);
 fclose(stream);
}