文件操作2

#include <stdio.h>
#include <stdlib.h>
int main(int argc,char* argv[])
{
    FILE *fp1,*fp2;
    char c;
    if(argc != 3)
    {
        printf("命令错误!正确用法类似 copy a b\n");
        exit(1);
    }
    else if((fp1 = fopen(argv[1],"r")) == NULL){
        printf("文件%s打开错误\n",argv[1]);
        exit(1);
    }
    else if((fp2 = fopen(argv[2],"w")) == NULL){
        printf("文件%s打开错误\n",argv[2]);
        exit(1);
    }
    else{
        while((c=fgetc(fp1))!=    EOF)
            fputc(c,fp2);
        fclose(fp1);
        fclose(fp2);
        printf("文件已复制完成!\n");
    }
    return 0;
}