91学习

#include <stdio.h>

#include <stdlib.h>

void main(){

FILE *fp;

char ch;

if((fp=fopen("E:\\exp01.txt","w"))==NULL){

printf("cannot open file\n");

exit(0);

}

ch=getchar();

while(ch!='#'){

  putc(ch,fp);

        ch=getchar();

}

fclose(fp);

}