4elist0504.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 5.4 - demonstrates variables
// scoped within a block

#include <iostream>

void myFunc();

int main()
{
	int x = 5;
	std::cout << "\nIn main x is: " << x;

	myFunc();

	std::cout << "\nBack in main, x is: " << x;
	return 0;
}

void myFunc()
{
	int x = 8;
	std::cout << "\nIn myFunc, local x: " << x << std::endl;

	{
		std::cout << "\nIn block in myFunc, x is: " << x;

		int x = 9;

		std::cout << "\nVery local x: " << x;
	}

	std::cout << "\nOut of block, in myFunc, x: " << x << std::endl;
}