c++作业50页例题3.1

#include <iostream>
#include <iomanip>
using namespace std;
int main(){
	double a=123.456,b=3.14159,c=-3214.67;
	cout<<setiosflags(ios::fixed)<<setiosflags(ios::right)<<setprecision(2);
	cout<<setw(10)<<a<<endl;
	cout<<setw(10)<<b<<endl;
	cout<<setw(10)<<c<<endl;
	return 0;
}