实例3.c

来自「几个用c语言写的关于文件的操作的源程序。」· C语言 代码 · 共 29 行

#include <stdio.h>
#include <stdlib.h>

main(int argc, char *argv[])
{
    FILE *in,*out;
    char ch;
    if(argc!=3);
    {
    	printf("You forgot to enter a filename\n");
    	exit(0);
    }
    if( (in=fopen(infile,"r") )==NULL)
    {
    	printf("cannot open infile\n");
    	exit(0);
    }
    if( (out=fopen(outfile,"w") )==NULL)
    {
    	printf("cannot open outfile\n");
    	exit(0);
    }
    
    while( ! feof(in) )  fputc(fgetc(in),out);
    fclose(in);
    fclose(out);
}