{{keywords>wiki library source code example reference}}
===== fmod =====
<code cpp>
    double fmod(double, double );
</code>
returns the remainder of a statement

===== cpp Sourcecode Example =====
<code cpp>
#include <iostream> /* including standard library */
#include <cmath> /* including math library */

using namespace std;
int main ( void ) 
{
    double y,x;
    x = 9;
    y = 4.2;

    //cout.setf(ios::fixed, ios::floatfield);
    cout.precision(8);

    cout << "rest of " << x << " / " << y << " is " << fmod(x,y) << endl;
    return 0;
}

</code>

==== output ====
   rest of 9 / 4.2 is 0.6