C语言 实验5-8 使用函数统计指定数字的个数 (15分)

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