p11_5.cpp

来自「相当丰富的C++源码」· C++ 代码 · 共 29 行

/***************************************************
* 程序名：p11_5.cpp                                *
* 功能： 格式操纵符与成员函数对比                  *
*                    By Antony                     *
*                     11-24-2005                   *
****************************************************/
# include <iostream>
# include <iomanip>
using namespace std;
void main() {
	double PI=3.1415926535;
	int precision;
	cout<<fixed;
	cout<<PI<<endl;
	cout.width(8);
	cout.fill('0');
	for(precision=0;precision<=9;precision++) {
		cout.precision(precision);
		cout<<PI<<endl;
	}
	cout<<PI<<endl;
    cout<<setw(8)<<setfill('0');
	for(precision=0;precision<=9;precision++) {
		cout<<setprecision(precision);
		cout<<PI<<endl;
	}
	cout<<PI<<endl; 
 }