#include <stdio.h>

void main() {
      int grade;
      printf ("Input grade :");
      scanf("%d", & grade);
      switch (grade) {
             case 1: 
                          printf("Fall (F)\n");break;
             case 2: 
                          printf("Bad (D)\n");break;
             case 3: 
                          printf("Good (C)\n");break;
             case 4: 
                          printf("Very Good (B)\n");break;
             case 5: 
                          printf("Excellent (A)\n");break;
             default:
                          printf("You have inputted false grade\n");
                          break;       // break isn’t necessary here
      }
}