Help me in solving PPATTERN problem

help
,
1

My issue

include
using namespace std;

int main() {
int t;
cin>>t;
while (t–){
int n;
cin>>n;
int v=0;
for(int i=1;i<=nn; i++){
for(int j=1; j<=nn; j++){
v=v+j;
cout<<v;
}

    }
}
return 0;

}
what changes should be done

My code

#include <iostream>
using namespace std;

int main() {
	int t;
	cin>>t;
	while (t--){
	    int n;
	    cin>>n;
	    int v=0;
	    for(int i=1;i<=n*n; i++){
	        for(int j=1; j<=n*n; j++){
	            v=v+j;
	            cout<<v;
	        }
	       
	    }
	}
	return 0;
}

Problem Link: PPATTERN Problem - CodeChef

2

@nandinish09120
Your code is not right .
Its just implementation problem which u can do in many ways .
This is one of the ways .
Just dry run it on rough copy for better understanding .

#include <iostream>
using namespace std;

int main() {
    int t;
    cin >> t;
    while(t--) {
        int N;
        cin >> N;
        int num = 1;
        int arr[100][100];
        int c = 0;
        while(num != N * N + 1) {
            
            for(int  i = 0;i < N;i++) {
                for(int j = 0;j < N;j++) {
                   if(i + j == c) {
                       arr[i][j] = num;
                       num++;
                   } 
                }
            }
            c++;
        }
        for(int i = 0;i < N;i++) {
            for(int j = 0;j < N;j++) {
                cout << arr[i][j] << " ";
            }
            cout << endl;
        }
    }
    return 0;
}