precision.cpp

来自「C++ sample code, for the book: C++ blac」· C++ 代码 · 共 17 行

#include <iostream>
#include <iomanip>
using namespace std;

int main()
{
    float pi = 3.14159;

    cout << "Pi: " << pi << endl;

    //cout.precision(3);

    cout << setprecision(3) << "Pi with a precision of three digits: " << pi << endl;

    return 0;
}