//使用函式統計指定數字的個數

#include<stdio.h>

int countdigit(int number,int digit);
int main(int argc,char const *argv[])
{
	int number,digit;
	scanf("%d%d",&number,&digit);
	while(1)
	{
		if(digit>=0&&digit<=9)
			break;
		printf("請重新輸入:");
	}
	
	printf("%d中%d的個數是%d\n",number,digit,countdigit(number,digit));
	
	return 0;
} 

int countdigit(int number,int digit)
{
	int cnt=0;
	int num;
	if(number<0)
		number=-number;
	if(number==0&&digit==0)
		cnt++;
	while(number)
	{
		num=number%10;
		if(num==digit)
			cnt++;
		number/=10;	
	}
	
	return cnt;
}