BASIC CALCULATOR

 BASIC CALCULATOR  USING SWITCH CASE :

#include<stdio.h>
#include<conio.h>
void main()
{
    int a,b,n,result,ch;
    printf("1= addition ");
    printf("\n2= subtraction ");
    printf("\n3= multiplication ");
    printf("\n4= division");
    printf("\nenter numbers = ");
    scanf("%d%d",&a,&b);
    printf("enter operation number = ");
    scanf("%d",&n);
    switch(n)
    {
    case 1:
    {
        printf("addition result =%d<",a+b);
        break;
    }
    case 2:
    {
        printf("subtraction result=%d",a-b);
        break;
    }
    case 3:
    {
        printf("multiplication result =%d",a*b);
        break;
    }
    case 4:
    {
        printf("division result = %d ",a/b);
        break;
    }
    default:
        printf("wrong input ");
        scanf("%d",&ch);
    }
    while(ch==1)
        getch();
}

OUTPUT :

1= addition

2= subtraction

3= multiplication

4= division

enter numbers = 101

56

enter operation number = 3

multiplication result =5656

enter operation number = 4

division result = 1

enter operation number = 2

subtraction result=45

enter operation number = 1

addition result =157