ch13_2.c

C语言程序设计上机指导与练习 冶金工业出版社 刘怀亮

/*CH13_2*/
/*从键盘输入一行字符，写入一个文件，再把该文件内容读出显示在屏幕上*/
#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
main()
{
   FILE *fp;
   char ch;
   if((fp=fopen("string","wt+"))==NULL)
   {
      printf("Cannot open file strike any key exit!");
      getch();
      exit(1);
   }
   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);
}