C Program Simple Calculator Using Switch Case(switch case example)

#include<stdio.h>
main ()
{
  int menu, add, sub, mult, quit, num1, num2;
  float dvd,Num1,Num2;// Here Num1 and Num2 is declared for Division operaion
  printf ("=======================================\n");
  printf ("Simple Calculator for Addition And Subtraction");
  printf ("=======================================\n");
  printf ("1.Add\n");
  printf ("2.Sub\n");
  printf ("3.Multiplication\n");
  printf ("4.Division\n");
  printf ("5.Quit\n");
  printf ("Please Select what do you want?\n");
  scanf ("%d", &menu);
  switch (menu)
    {
    case 1:
      printf ("Enter Two Numbers:\n");
      scanf ("%d %d", &num1, &num2);
      add = num1 + num2;
      printf ("Addition =%d", add);
      break;

    case 2:
      printf ("Enter Two Numbers:\n");
      scanf ("%d %d", &num1, &num2);
      sub = num1 - num2;
      printf ("Subtraction =%d\n", sub);
      break;
    case 3:
      printf ("Enter Two Numbers:\n");
      scanf ("%d %d", &num1, &num2);
      mult = num1 * num2;
      printf ("Multiplication =%d\n", mult);
      break;
    case 4:
      printf ("Enter Two Numbers:\n");
      scanf ("%f %f", &Num1, &Num2);
      dvd = Num1 / Num2;
      printf ("Division =%.2f", dvd);
      break;
    case 5:
      printf ("Program terminated!");
      break;
    default:
      printf ("Wrong Input!");}
      return 0;
    }

Output: