usemath.cpp

来自「C++&datastructure书籍源码,以前外教提供现在与大家共享」· C++ 代码 · 共 16 行

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

// illustrates use of math function returning a value

int main()
{
    double value;
    cout << "enter a positive number ";
    cin >> value;
    cout << "square root of " << value << " = " << sqrt(value) << endl;

    return 0;
}