电子宠物！（简单）

// critter caretaker#include <iostream>using namespace std;class Critter{public:Critter(int hunger = 0, int boredom = 0);void Talk();void Eat(int food = 4);void Play(int fun = 4);private:int m_Hunger;int m_Boredom;int GetMood() const;void PassTime(int time = 1);};Critter::Critter(int hunger, int boredom):m_Hunger(hunger), m_Boredom(boredom){}int inline Critter::GetMood() const{return (m_Hunger + m_Boredom);}void Critter::PassTime(int time){m_Hunger += time;m_Boredom += time;}void Critter::Talk(){cout << "I'm a ctriter and I feel ";int mood = GetMood();if (mood > 15)cout << "mad./n";else if (mood > 10)cout << "frustrated./n";else if (mood > 5)cout << "okey./n";elsecout << "happy./n";PassTime();}void Critter::Eat(int food){cout << "Brruppp./n";m_Hunger -= food;if (m_Hunger < 0){m_Hunger = 0;PassTime();}}void Critter::Play(int fun){cout << "wheee./n";m_Boredom -= fun;if (m_Boredom < 0){m_Boredom = 0;PassTime();}}int main (){Critter crit;crit.Talk(); int choice;do{cout << "/nCritter Caretaker/n/n";cout << "0 - Quit/n";cout << "1 - Listen to your critter/n";cout << "2 - Feed your critter/n";cout << "3 - Play with your critter/n/n";cout << "Choice: ";cin >> choice;switch (choice){case 0:cout << "Good-bye./n";break;case 1:crit.Talk();break;case 2:crit.Eat();break;case 3:crit.Play();break;default:cout << "/nSorry,but " << choice << "isn't a walid choice./n";}}while (choice != 0);system("PAUSE");return 0;}