#include <stdio.h>
main(int argc,char *argv[])
{
    FILE *in,*out;
    if (argc!=3)
    {
        printf("格式错误!copy filename1 filename2");
        getch();
        exit(0);
    }
    if ((out=fopen(argv[1],"r"))==NULL)
    {
        printf("打开源文件出错!");
        getch();
        exit(0);
    }
    if ((in=fopen(argv[2],"w"))==NULL)
    {
        printf("打开目标文件出错!");
        getch();
        exit(0);
    }
    while (!feof(out))
    {
        fputc(fgetc(out),in);
    }
    fclose(in);
    fclose(out);
    printf("拷贝文件成功！");
    getch();
     
}