C program to implement simple calculator using switch case.


/*  C program to implement simple calculator using switch case.*/

#include<stdio.h>
#include<stdlib.h>
void main()
{
    int a,b,res,ch;
    clrscr();

    printf("\t*********************");
    printf("\n\tMENU\n");
    printf("\t********************");
    printf("\n\t(1)ADDITION");
    printf("\n\t(2)SUBTRACTION");
    printf("\n\t(3)MULTIPLICATION");
    printf("\n\t(4)DIVISION");
    printf("\n\t(5)REMAINDER");
    printf("\n\t(0)EXIT");
    printf("\n\t********************");
    printf("\n\n\tEnter your choice:");
    scanf("%d",&ch);
    if(ch<=5 & ch>0)
    {
    printf("Enter two numbers:\n");
    scanf("%d%d",&a,&b);
    }
    switch(ch)
    {
    case 1:
    res=a+b;
    printf("\n Addition:%d",res);
    break;
    case 2:
    res=a-b;
    printf("\n Subtraction:%d",res);
    break;
    case 3:
    res=a*b;
    printf("\n Multiplication:%d",res);
    break;
    case 4:
    res=a/b;
    printf("\n Division:%d",res);
    break;
    case 5:
    res=a%b;
    printf("\n Remainder:%d",res);
    break;
    case 0:
    printf("\n Choice Terminated");
    exit(1);
    break;
    default:
    printf("\n Invalid Choice");
    }
    getch();
}


Output:

    *********************
    MENU
    ********************")
    (1)ADDITION
    (2)SUBTRACTION
    (3)MULTIPLICATION
    (4)DIVISION
    (5)REMAINDER

    (0)EXIT
    ********************

    Enter your choice: 1
    Enter two numbers:
    4
    5

    Addition : 9

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