//使用函数统计指定数字的个数
#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("请重新输入:");
}
printf("%d中%d的个数是%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;
if(num==digit)
cnt++;
number/=10;
}
return cnt;
}
