关于我又一次觉得我应该全对但是全错这件事

弱狗求求大佬帮帮我吧，为什么我答案明明跟示例一模一样还是错啊。。。。我真的快坚持不下去了。呜呜呜

#include<iostream>
using namespace std;
char a[6][400];
char b[101];
int main() {
    int n = 0; cin >> n;
    int c = ((n * 3) + n - 1);//一共有多少行暗点
    for (int i = 1; i <= 5; i++)
        for (int j = 1; j <= c; j++)
            a[i][j] = '.';//设置所有暗点

    for (int i = 0; i <= n; i++) {//把自然数以字符形式存入数组b
        b[i] = getchar();
    }
    int h = 1;
    for (int t = 1; t <= n; t++) {//根据数组b打印对应数字
        char i = b[t];
        int  l = 1;
        if (i == '0') {
            a[l][h] = a[l][h + 1] = a[l][h + 2] = a[l + 1][h] = a[l + 1][h + 2] = a[l + 2][h] = a[l + 2][h + 2] = a[l + 3][h] = a[l + 3][h + 2] = a[l + 4][h] = a[l + 4][h + 1] = a[l + 4][h + 2] = 'X';
                h += 4;
        }
        else if (i == '1') {
            a[l][h + 2] = a[l + 1][h + 2] = a[l + 2][h + 2] = a[l + 3][h + 2] = a[l + 4][h + 2] = 'X';
            h += 4;
        }
        else if (i == '2') {
            a[l][h] = a[l][h + 1] = a[l][h + 2] = a[l + 1][h + 2] = a[l + 2][h] = a[l + 2][h + 1] = a[l + 2][h + 2] = a[l + 3][h] = a[l + 4][h] = a[l + 4][h + 1] = a[l + 4][h + 2] = 'X';
            h += 4;
        }
        else if (i == '3') {
            a[l][h] = a[l][h + 1] = a[l][h + 2] = a[l + 1][h + 2] = a[l + 2][h] = a[l + 2][h + 1] = a[l + 2][h + 2] = a[l + 3][h + 2] = a[l + 4][h] = a[l + 4][h + 1] = a[l + 4][h + 2] = 'X';
            h += 4;
        }
        else if (i == '4') {
            a[l][h] = a[l][h + 2] = a[l + 1][h] = a[l + 1][h + 2] = a[l + 2][h] = a[l + 2][h + 1] = a[l + 2][h + 2] = a[l + 3][h + 2] = a[l + 4][h + 2] = 'X';
            h += 4;
        }
        else if (i == '5') {
            a[l][h] = a[l][h + 1] = a[l][h + 2] = a[l + 1][h] = a[l + 2][h] = a[l + 2][h + 1] = a[l + 2][h + 2] = a[l + 3][h + 2] = a[l + 4][h] = a[l + 4][h + 1] = a[l + 4][h + 2] = 'X';
            h += 4;
        }
        else if (i == '6') {
            a[l][h] = a[l][h + 1] = a[l][h + 2] = a[l + 1][h] = a[l + 2][h] = a[l + 2][h + 1] = a[l + 2][h + 2] = a[l + 3][h] = a[l + 3][h + 2] = a[l + 4][h] = a[l + 4][h + 1] = a[l + 4][h + 2] = 'X';
            h += 4;
        }
        else if (i == '7') {
            a[l][h] = a[l][h + 1] = a[l][h + 2] = a[l + 1][h + 2] = a[l + 2][h + 2] = a[l + 3][h + 2] = a[l + 4][h + 2] = 'X';
            h += 4;
        }
        else if (i == '8') {
            a[l][h] = a[l][h + 1] = a[l][h + 2] = a[l + 1][h] = a[l + 1][h + 2] = a[l + 2][h] = a[l + 2][h + 1] = a[l + 2][h + 2] = a[l + 3][h] = a[l + 3][h + 2] = a[l + 4][h] = a[l + 4][h + 1] = a[l + 4][h + 2] = 'X';
            h += 4;
        }
        else if (i == '9') {
            a[l][h] = a[l][h + 1] = a[l][h + 2] = a[l + 1][h] = a[l + 1][h + 2] = a[l + 2][h] = a[l + 2][h + 1] = a[l + 2][h + 2] = a[l + 3][h + 2] = a[l + 4][h] = a[l + 4][h + 1] = a[l + 4][h + 2] = 'X';
            h += 4;
        }
    }
    for (int i = 1; i <= 5; i++) {
        for (int j = 1; j <= c; j++) {
            cout << a[i][j];
        }
        cout << "\n";
    }
    return 0;
}