C語言編程題:從鍵盤輸入三行字符,寫入壹個文件,再把該文件內容讀出顯示在屏幕上.

#include<stdio.h>main(){ FILE *fp; char ch; if((fp=fopen("d:\\jrzh\\example\\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);}