数字切分有误，求解疑

这个最开始的数字切分出问题，后面的数字打印没问题

改了好几遍，求解疑 直接上WA代码

#include<bits/stdc++.h>
using namespace std;
int bit[105];
int main(){
    int n,re=0;
    long long ci;
    cin>>n>>ci;
    for (int i=0;;i++){
        while (ci!=0){
            bit[i]=ci%10;
            ci/=10;
            re++;
        }
        break;
    }
    int now;
    for (int i=re;i>-1;i--){                //first
        now=bit[i];
        switch(now){
            case 0:cout<<"XXX";break;
            case 1:cout<<"..X";break;
            case 2:cout<<"XXX";break;
            case 3:cout<<"XXX";break;
            case 4:cout<<"X.X";break;
            case 5:cout<<"XXX";break;
            case 6:cout<<"XXX";break;
            case 7:cout<<"XXX";break;
            case 8:cout<<"XXX";break;
            case 9:cout<<"XXX";break;
        }
        if(i!=re-1){
            cout<<".";
        }
    }
    cout<<endl;
    for (int i=re;i>-1;i--){                //second
        now=bit[i];
        switch(now){
            case 0:cout<<"X.X";break;
            case 1:cout<<"..X";break;
            case 2:cout<<"..X";break;
            case 3:cout<<"..X";break;
            case 4:cout<<"X.X";break;
            case 5:cout<<"X..";break;
            case 6:cout<<"X..";break;
            case 7:cout<<"..X";break;
            case 8:cout<<"X.X";break;
            case 9:cout<<"X.X";break;
        }
        if(i!=re-1){
            cout<<".";
        }
    }
    cout<<endl;
    for (int i=re;i>-1;i--){                //third
        now=bit[i];
        switch(now){
            case 0:cout<<"X.X";break;
            case 1:cout<<"..X";break;
            case 2:cout<<"XXX";break;
            case 3:cout<<"XXX";break;
            case 4:cout<<"XXX";break;
            case 5:cout<<"XXX";break;
            case 6:cout<<"XXX";break;
            case 7:cout<<"..X";break;
            case 8:cout<<"XXX";break;
            case 9:cout<<"XXX";break;
        }
        if(i!=re-1){
            cout<<".";
        }
    }
    cout<<endl;
    for (int i=re;i>-1;i--){                //fourth
        now=bit[i];
        switch(now){
            case 0:cout<<"X.X";break;
            case 1:cout<<"..X";break;
            case 2:cout<<"X..";break;
            case 3:cout<<"..X";break;
            case 4:cout<<"..X";break;
            case 5:cout<<"..X";break;
            case 6:cout<<"X.X";break;
            case 7:cout<<"..X";break;
            case 8:cout<<"X.X";break;
            case 9:cout<<"..X";break;
        }
        if(i!=re-1){
            cout<<".";
        }
    }
    cout<<endl;
    for (int i=re;i>-1;i--){                //fifth
        now=bit[i];
        switch(now){
            case 0:cout<<"XXX";break;
            case 1:cout<<"..X";break;
            case 2:cout<<"XXX";break;
            case 3:cout<<"XXX";break;
            case 4:cout<<"..X";break;
            case 5:cout<<"XXX";break;
            case 6:cout<<"XXX";break;
            case 7:cout<<"..X";break;
            case 8:cout<<"XXX";break;
            case 9:cout<<"XXX";break;
        }
        if(i!=re-1){
            cout<<".";
        }
    }
//  cout<<endl;
    return 0;
}