How to make a mini calculator with c language??

Code of c language for as like calculator in this calculator code you can add, substract , multiply and divide only integer .

Code

include<stdio.h>

int main()
{
    int a;
    int b;
    printf("enter the value of a =\n ",&a);
    scanf("%d",&a);
    printf("enter the value of b=\n");
    scanf("%d", &b);
    printf("result the sum of a and b = %d\n",a + b);
    printf("result the subtract of a and b = %d \n ", a - b);
    printf("result the multiply of a and b = %d \n",a*b);

    printf("result the divide of a and b = %d\n",a/b);


    printf("by ABHINAW singh\n");
    return 0;
}