sample c++ code for checkingif double numbers are divisible to a number using modf

IsDoubleDivisible.cpp

#include <iostream>
#include <math.h>
using namespace std;

bool isDivisible(double number, double divisor);

int main()
{
    // generate 20 random numbers and checkif div by 10
    for (int i = 0; i < 20; i++)
    {
        double number = rand() % 1000;

        if (isDivisible(number, 10))
        {
            cout << "the number " << number << " is divisible by 10" << endl;
        }
        else
        {
            cout << "the number " << number << " is NOT divisible by 10" << endl;
        }
    }
    return 0;
}

bool isDivisible(double number, double divisor)
{
    double floatPart, integerPart = 0;
    double quotient = number / divisor;

    if (modf(quotient, &integerPart) == 0)
        return true;
    else
        return false;
}

initial