Switch-Case Multiple Selection Sample

Statistical Result  For Student Grade

#include <stdio.h>

 int main( void )
 {
  char anot;
  int asay=0,bsay=0,csay=0,dsay=0,fsay=0;//These are counter

   printf("Please Enter Letter grades:\n");
  printf("Enter the EOF to end:n");

  while((anot=getchar())!=EOF){//to end <ctrl> z if your system is windows

//but if your system is Linux/Unix/Mac OSX system you have to use <cntrl>d


   switch(anot){
    case 'A':
    ++asay;
  printf("Please Enter Letter grades:\n");
  printf("Enter the EOF to end\n");
    break;//this break allow us to exit from program
    case 'B' :
    ++bsay;
    printf("Please Enter Letter grades:\n");
  printf("Enter the EOF to end\n");
    break;

    case 'C' :
    ++csay;
    printf("Please Enter Letter grades:\n");
  printf("Enter the EOF to end\n");
    break;

    case 'D' :
    ++dsay;
    printf("Please Enter Letter grades:\n");
  printf("Enter the EOF to end\n");
    break;

    case 'F' :
    ++fsay;
    printf("Please Enter Letter grades:\n");
  printf("Enter the EOF to end\n");
    break;


    case '\n' ://If user enter these program return to beginning
      case '\t' :// it means it start from while
    case ' ' :  
    break;

     default://here default means if your all condition is not true for your case

// make this action which listed down
      printf("Your character is undesirable\n");
      printf("It shoul be one of these(A,B,C,D,F):");
      break;
   }


  }

  printf("A:%d\n",asay);
  printf("B:%d\n",bsay);
  printf("C:%d\n",csay);
  printf("D:%d\n",dsay);
  printf("F:%d",fsay);



 return 0;
}