求求大神帮忙

#include<iostream>
using namespace std;
int a[30],i;
int main()
{
    int b,c,d,i;
    cin>>b>>c;
    for(i=b;i<=c;i++){
        d=i;
    }
        while(d>0){
            a[d%10]++;
            d/=10;
        }
    }
    for(i=0;i<=9;i++){
        cout<<a[i]<<" ";
    }
    return 0;
}