C Primer Plus书中代码注释-chapter17_8_setf.cpp

chapter17_8_setf.cpp

#include <iostream>

int main(){
	using std::cout;
	using std::endl;
	using std::ios_base;
	
	int temperature = 63;
	cout << "Today's water temperature: ";
	cout.setf(ios_base::showpos);
	cout << temperature << endl;
	
	cout << "For our programming friends, that's\n";
	cout << std::hex << temperature << endl;
	cout.setf(ios_base::uppercase);		//对于16进制输出，使用大写字母，E表示法
	cout.setf(ios_base::showbase);		//加前缀 0， 0x
	cout << "or\n";
	cout << temperature << endl;
	cout << "How " << true << "! oops -- How ";		//输出bool值的hex十六进制表示0X1
	cout.setf(ios_base::boolalpha);		//设置输出bool值的字符串，下面输出true
	cout << true << "!\n";
	
	return 0;
}