#include "stdio.h"
int main(int argc,char *argv[])
{
FILE *fp;
char ch;
if((fp=fopen("bing.doc","wt+"))==NULL){
printf("CANNOT open this bing.txt");
getch();
exit(0);
}
printf("input a string :\n");
ch=getchar();
while(ch!='\n')
{
fputc(ch,fp);
ch=getchar();
}
rewind(fp);
ch=fgetc(fp);
while(ch!=EOF)
{
putchar(ch);
ch=fgetc(fp);
}
printf("\n");
fclose(fp);
}