[C++知识库]C++中的boolalpha

1.头文件

#include <iostream>

2.功能

boolalpha： 把bool值显示为true或false

noboolalpha： 取消 boolalpha流的格式标志

3.例子

void test_boolalpha()
{
	std::cout << "true is " << true << std::endl;
	std::cout << "false is " << false << std::endl;
	
	std::cout << std::boolalpha;
	std::cout << "true is " << true << std::endl;
	std::cout << "false is " << false << std::endl;
 
	std::cout << std::noboolalpha;
	std::cout << "true is " << true << std::endl;
	std::cout << "false is " << false << std::endl;
}

输出结果：
	true is 1
	false is 0
	
	true is true
	false is false
	
	true is 1
	false is 0