程序调试1

 1 /*  Read Data from file then Show it on the screen.
 2  *  31-10-2015
 3  *  Don
 4  */
 5 
 6 #include <stdio.h>
 7 #include <stdlib.h>
 8 int main()
 9 {
10     FILE *fp;
11     char ch;
12     if((fp = fopen("/opt/learngit/c-tags/input.doc", "rt")) == NULL)
13     {
14     printf(":[ file not exit!");
15         getch();      // #Error
16         exit(1);
17     }
18     // else
19     ch = fgetc(fp);
20     while(ch != EOF){
21     putchar(ch);
22         ch = fgetc(fp);    
23     }
24     fclose(fp);
25 }