数位拆分

注意f=1要放在循环内

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n;int shuwei;int count=0;int f;
    cin>>n;
    for(int i=1;i<=n;i++){
        int shuzi = i; 
        int temp = shuzi%10; //定义临时变量
        f=1;
        while(shuzi>0){
            shuwei = shuzi%10;
          if(shuwei!=temp){
                f=0;
                break;
            }   
            shuzi/=10;
        }
          if(f==1) count++;  
    }
    cout<<count;
    return 0;
}