4elist0403.cpp

《21天学通C＋＋》附盘的原代码。书上的每个例子在这里都有相应的C语言程序。

// Listing 4.3 - demonstrates use of
// prefix and postfix increment and
// decrement operators
#include <iostream>
int main()
{
	using std::cout;

	int myAge = 39;      // initialize two integers
	int yourAge = 39;
	cout << "I am: " << myAge << " years old.\n";
	cout << "You are: " << yourAge << " years old\n";
	myAge++;         // postfix increment
	++yourAge;       // prefix increment
	cout << "One year passes...\n";
	cout << "I am: " << myAge << " years old.\n";
	cout << "You are: " << yourAge << " years old\n";
	cout << "Another year passes\n";
	cout << "I am: " << myAge++ << " years old.\n";
	cout << "You are: " << ++yourAge << " years old\n";
	cout << "Let's print it again.\n";
	cout << "I am: " << myAge << " years old.\n";
	cout << "You are: " << yourAge << " years old\n";
	return 0;
}