// yasuo.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include<stdio.h>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#define LEN 40
int main(int argc, char* argv[])
{
    FILE *in,*out;
    int ch;
    char name[LEN];
    int count=0;
        //检查命令行参数
    if(argc<2)
    {
        fprintf(stderr,"Usage: %s filename\n",argv[0]);
        exit(1);
    }
        //实现输入
    if((in=fopen(argv[1],"r"))==NULL)
    {
        fprintf(stderr,"I couldn't open the file \"%s\"\n",argv[1]);
        exit(2);
    }
        //实现输出
    strcpy(name,argv[1]);
    strcat(name,".red");
    if((out=fopen(name,"w"))==NULL)
    {
        fprintf(stderr,"Can't create output file.\n");
        exit(3);
    }
        //复制数据
    while((ch=getc(in))!=EOF)
        if(count++ %3==0)
            putc(ch,out);
    //收尾工作
        if(fclose(in)!=0 || fclose(out)!=0)
        fprintf(stderr,"Error in closing file\n");
    return 0;
}

//我运行了以后提示我：Usage:E:\Program Files\Microsoft Visual Studio\MyProjects\reducto\Debug\reducto.exe filename
然后 我就去运行reducto.exe 屏幕闪一下就完了，我是真不明白
这程序改怎么运行？求大神帮助