#include <iostream>
#include <cmath>

//int - returns integer / main - function / () - no parameters
int main()
{
    //Standard I/O Syntax
    using namespace std;
    //double - real number / num1 - variable name
    double num1;
    //cout - output / << - output operator / endl - end line
    cout << "Pick your number..." << endl;
    //cin - input / >> - input operator / num1 - input variable
    cin >> num1;
    //double - real number / num2 - variable name
    double num2;
    //num2 - variable name / sqrt - math function / (num1) - parameter
    num2 = sqrt(num1);
    //cout - output / << - output operator
    cout << "The square root of " << num1 << " is " << num2 << endl;
    //cin - input operator / .get() - Cross-Platform alternative to System("PAUSE") for win32 applications
    system("PAUSE");
    //Returns variable EXIT_SUCCESS to integer function main
    return EXIT_SUCCESS;
}