题解 | 牛牛数数

#include <iostream>
using namespace std;

int main() {
    int n = 0;
    cin >> n;
    int b = 0;
 
    for (int i = 1; i <= n; i++)
    {   int flag=0;
        int c = i;
        while (c > 0)
        {
            b = c% 10;
            c= c / 10;
            if (b == 4)
            {
              flag=1;
            }
        }
        if (i % 4 == 0)
        {
            flag=1;
        }
        
        if(flag==0)
        {
              cout << i << endl;
        }
       
    }
}