demo_2_io_format_3_a.cpp

对于一个初涉VC＋＋的人来书

//***************************************************
// 用控制符进行格式化输出
//***************************************************

# include <iostream>
# include <iomanip>

using namespace std;

int main()
{
	float a[3];
	
	cout<<"input data: "<<endl;
	for(int i=0;i<3;i++)
		cin>>a[i];

	cout<<setiosflags(ios::fixed)<<setprecision(2);
	
	cout<<"output data: "<<endl;
	for(i=0;i<3;i++)
		cout<<setw(10)<<a[i]<<endl;

	return 0;
}