如果（pfile() = = 0）unlink（名字）别的fprintf（stderr，“%s：I/O错误

代码说明：

if (pfile() == 0) unlink(inname) else fprintf(stderr, "%s: I/O Error -- File unchanged ", inname) fclose(outfile) fclose(infile) } exit(0) - if (pfile() == 0) unlink(inname) else fprintf(stderr, "%s: I/O Error-- File unchanged ", inname) fclose(outfile) fclose(infile) } exit(0)