oldmac1.cpp

C++&datastructure书籍源码,以前外教提供现在与大家共享

#include <iostream>
#include <string>
using namespace std;

// working version of old macdonald, single parameter procedures

void EiEio()
{
    cout << "Ee-igh, Ee-igh, oh!" << endl;
}

void Refrain()
{
    cout << "Old MacDonald had a farm, ";
    EiEio();
}

void HadA(string animal)
{
    cout << "And on his farm he had a " << animal << ", ";
    EiEio();
}

void WithA(string noise)
// the principal part of a verse
{
    cout << "With a " << noise << " " << noise << " here" << endl;
    cout << "And a " << noise << " " << noise << " there" << endl;

    cout << "Here a " << noise << ", " 
         << "there a " << noise << ", "
         << " everywhere a " << noise << " " << noise << endl;
}

void Pig()
{
    Refrain();
    HadA("pig");
    WithA("oink");
    Refrain();
}

void Cow()
{
    Refrain();
    HadA("cow");
    WithA("moo");
    Refrain();
}

int main()
{
    Cow();
    cout << endl;
    Pig();
    return 0;
}