Manipulator(流操作符)

Posted 2021-03-13 la-pu-ta

Manipulator(流操作符)

#include <iostream>
#include <iomanip>
using namespace std;
int main()
{
    float a = 2.5;
    cout<<a<<endl;
    cout<<static_cast<int>(a)<<endl;
    float b = 3.1415926;
    cout<<b<<endl;
    cout<<setw(4)<<a<<endl;
    cout<<setfill('*')<<setw(4)<<a<<endl;
    cout<<setw(4)<<b<<endl;
    cout<<setprecision(8)<<b<<endl;
    cout<<fixed<<setprecision(3)<<b<<endl;
    //char ch;
    //cin>>noskipws>>ch;  能够读入空白字符，而不是跳过
    return 0;
}