log()

Prototype: double log(double anumber);
Header File: math.h (C) or cmath (C++)
Explanation: Log returns the natural logarithm for anumber, as long as it is not negative, or zero. .

//Example gives the natural logarithm of 100
#include <iostream>
#include <cmath>

using namespace std;

int main()
{
    cout<<log(100);
}

Other Functions