Calcuator program v1.0

//
//
//  Calcuator program v1.0
//  (C) by Adm1n_0v3rride 2017
//
//
#include <iostream>

using namespace std;

int main()
{
    int first_number;
    int secound_number;
    int choice;
    int sum; // sums up
    int subtract; // Subtracts both numbers.
    int multiply; // Multiply both numbers.
    float divide; /* User has a choice of geting a float answer or a int answer. */
    int modulo;

    cout << "Welcome to Calcuator program v1.0\n";

    cout << "Please enter a number: " << endl;
    cin>>first_number;

    cout << "Please enter a secound number: " << endl;
    cin>>secound_number;

    cout << "Please select which operation that you are doing \n1.addition\n2.subtraction\n3.multiplication\n4.division\n5.Modulus\n: " << endl;
    cin>>choice;

    if(choice == 1)
    {
        sum = secound_number + first_number;
        cout << "The sum is: "<<sum<<endl;
    }
    if(choice == 2)
    {
        subtract = secound_number - first_number;
        cout << "The answer is: " <<subtract<<endl;
    }
    if(choice == 3)
    {
       multiply = secound_number * first_number;
       cout << "The answer is: " <<multiply<<endl;
    }
    if(choice == 4)
    {
        divide = secound_number / first_number;
        cout << "The answer is: "<<divide<<endl;
    }
    if(choice == 5)
    {
        modulo = secound_number % first_number;
        cout << "The answer is: "<<modulo<<endl;
    }
    return 0;
}