如何验证《c primer plus》上的程序清单 13.2

Question

代码如下：

#include "stdafx.h"
#include<stdlib.h>
#include<string.h>
#define LEN 40




int _tmain(int argc, char* argv[])
{
FILE *in, *out;
int ch;
char name[LEN];
int count = 0;
if (argc < 2)
{
fprintf(stderr, "Usage: %s filenamen", argv[0]);
exit(1);
}


if ((in = fopen(argv[1], "r")) == NULL)
{
fprintf(stderr, "I couldn't open the file "%s"n",
argv[1]);
exit(2);
}


strcpy(name, argv[1]);
strcat(name, ".red");
if ((out = fopen(name, "w")) == NULL)
{
fprintf(stderr, "Can't create output file.n");
exit(3);
}


while ((ch = getc(in)) != EOF)
if (count++ % 3 == 0)
putc(ch, out);


if (fclose(in) != 0 || fclose(out) != 0)
fprintf(stderr, "Error in closing filesn");
return 0;
}

Answer 1

这算自问自答吗？

Answer 2

终于搞明白了。在reducto.exe存在的那个文件夹里新建一个txt文件，在里面添加So even Eddy came oven ready.然后重命名为eddy(不要有后缀名)，最后打开命令行窗口转至该目录输入reducto eddy即可。