// CSE 303, Spring 2009, Marty Stepp
// This is our first example C++ program.
// It is mostly just a syntax example and not a very useful program.
// To compile it, use  g++ -g -Wall -o hello hello.cpp

#include <iostream>
using namespace std;

void foo() {
    cout << "this is foo" << endl;
}

namespace marty {
    int main2(void) {
        return 0;
    }
}

// An example of references.
// Like pointers, but more constrained and with simpler syntax.
void swap(int& a, int& b) {
    int temp = a;
    a = b;
    b = temp;
}

int min(int a, int b) {
    int m;
    if (a < b) {
        m = a;
    } else {
        m = b;
    }
    return m;
}

int main(void) {
    cout << "Hello, world!" << endl;
    
    int age;
    cout << "How old are you Marty? ";
    cin >> age;
    
    int iq;
    cout << "What is your IQ Marty? ";
    cin >> iq;
    
    swap(age, iq);
    
    cout << "I am " << age << " years old and have IQ " << iq << endl;
    foo();
    
    marty::main2();
    
    return 0;
}