actual diamond alphabet pattern.cpp

#include <iostream>
#include <math.h>
#include <vector>

using namespace std;

int main()
{
    int n;
    cin >> n;

    string array[9]={"A","B","C","D","E","F","G","H","I"};
    for(int i=0;i<n;i++){
        for(int j=n-i-1;j>0;j--){
            cout<<" ";
        }
        int x=2*i+1;
        for (int k=0;k<x;k++){
            cout<<array[k];
        }
        cout<<endl;
    }
    for(int a=0;a<n-1;a++){
        for(int d=0;d<a+1;d++){
            cout<<" ";
        }
        int x=2*(n-a-2)+1;
        for (int q=0;q<x;q++){
            cout<<array[q];
        }
        cout<<endl;
    }
}