FILE* fp; _int64 liPrev; char szReadBuf[513]; fp = fopen("test.txt", "rtS"); do { iRet = fgets(szReadBuf, 512, fp); if(szReadBuf[0] != '0') { _lseeki64(fileno(fp), liPrev, SEEK_SET); //(1) break; } }while(!_eof(fileno(fp))); fclose(fp);昨…