Example: Arithmetic Operators in C# using Functions

// Arithmetic Operators in C# using Functions
using System;

public class W3CW {
    // Function to make an Addition
    public static int Add(int a, int b) {
        return a + b;
    }
    
    // Function to make Subtraction
    public static int Sub(int a, int b) {
        return a - b;
    }
    
    // Function to make Multiplication
    public static int Mul(int a, int b) {
        return a * b;
    }
    
    // Function to make Division
    public static float Div(int a, int b) {
        return (float)(a / b);
    }
    
    // Function to make Modulus
    public static int Mod(int a, int b) {
        return a % b;
    }
    
    // It's the driver function
    static public void Main (string[] args) {
        Console.WriteLine("Enter any two positive integer numbers:\n");
        int p = Convert.ToInt32(Console.ReadLine());
        int q = Convert.ToInt32(Console.ReadLine());
        
        // It will print the final output
        Console.WriteLine("Addition of       "+p+" + "+q+" = "+Add(p,q));
        Console.WriteLine("Subtraction of    "+p+" - "+q+" = "+Sub(p,q));
        Console.WriteLine("Multiplication of "+p+" * "+q+" = "+Mul(p,q));
        Console.WriteLine("Division of       "+p+" / "+q+" = "+Div(p,q));
        Console.WriteLine("Modulus of        "+p+" % "+q+" = "+Mod(p,q));
    }
}