Program for addition, Subtraction, Multiplication and division

Question # 1

Write a program that can input two number from user and then it will print their addition, subtration, multiplication and division.

Program 

// program for Add sub multiplication
// Division and to find average of two number

// Header files
#include <iostream>       
#include <iomanip>            
#include <stdlib.h>
using namespace std;
int main()
{

        // Veriables declaration
        int num1, num2, add, sub, mul;  
double div, average, num3, num4, sum;

        // To show point
cout << fixed << showpoint << setprecision(2);

        // prompt the user to enter numbers
cout << "Enter your First number ";  
cin >> num1;
cout << "Enter your Second number ";
cin >> num2;

        // operations
add = num1 + num2;    
sub = num1 - num2;
mul = num1 * num2;

        // To show result on the secreen
cout << "Addition of Number is = " << add << endl;   
cout << "subtraction of Number is = " << sub << endl;
cout << "Multiplicaion of Number is = " << mul << endl;

        // To convert integer type to float
num3 = static_cast<float>(num1);   
num4 = static_cast<float>(num2);
sum = static_cast<float>(add);

        // again operations
div = num3 / num4;       
average = add / 2;

         // To show results
cout << "Division of Number is = " << div << endl; 
cout << "Aerage of Number is = " << average << endl;
return 0;
}