This method is known as round to nearest via modulus division, and permit to round to the nearest multiple of the number.

int round(int number, int multiple)
{
    int half = multiple/ 2;
    int result = 0;

    if(number < 0) half = -half;

    result = ((number + half) - ((number + half) % multiple));

    return result;
}

Examples:

round(63, 4)
>> 64

round(61, 4)
>> 60

round(8, 10)
>> 10

round(2, 10)
>> 0

Thanks to Gavin Kistner.