用求一个数的个位数来依次比较

int CountDigit( int number, int digit )
{
    int conpare,count;
    if (number <0)
    {
        number = number*-1;
    }
    while (number >10)
    {
        conpare = number %10;
        number = number/10;
        if (conpare == digit)
        count++;
    }
    if (number == digit)
    count++;
    return count;    
}