// Program to perform Arithmetic Operations using functions - Type 3

#include <stdio.h>

int add()
{
    float a, b, sum;
    printf("Enter 2 numbers:-\n");
    scanf("%f\n%f", &a, &b);
    sum = a + b;
    return sum;
}

int sub()
{
    int a, b, diff;
    printf("Enter two numbers: \n");
    scanf("%d\n %d", &a, &b);
    diff = a - b;
    return diff;
}

float mul()
{
    float a, b;
    printf("Enter two numbers: \n");
    scanf("%f\n %f", &a, &b);
    return a * b;
}

float div()
{
    float a, b;
    printf("Enter 2 numbers: \n");
    scanf("%f\n%f", &a, &b);
    return a / b;
}

void main()
{
    int operation;
    int a, b;
    float num1, num2;
    printf("-----Select the Operation------\n");
    printf("1. Addition\n2. Subtraction\n3. Multiplication\n4. Division\n");
    printf("Enter the corresponding number of Operation: ");
    scanf("%d", &operation);

    switch (operation)
    {
    case 1:
        printf("Sum of given 2 numbers are:- %d", add());
        break;

    case 2:
        printf("Subtraction is: %d",sub());
        break;

    case 3:
        printf("Multiplication is: %f", mul());
        break;

    case 4:
        printf("Division is: %f",div());
        break;

    default:
        printf("Wrong input");
    }
}