Print Diagonally

problem id:--http://practice.geeksforgeeks.org/problems/print-diagonally/0

code:--

#include<iostream>
#include<vector>
using namespace std;
void print(vector<vector<int>> arr,int n,int i,int j)
{
int temp1=i,temp2=j;
while(temp1>=0 && temp2>=0)
{
cout<<arr[temp1][temp2]<<" ";
--temp1,--temp2;
}
if(i+1<n)
print(arr,n,i+1,j);
else if(j+1<n)
print(arr,n,i,j+1);
}
int main()
{
int t;
cin>>t;
while(t--)
    {
    int n;
    cin>>n;
    vector<vector<int>> a(n,vector<int>(n));
    for(int i=0;i<n;i++)
    for(int j=0;j<n;++j)
    cin>>a[i][j];
    print(a,n,0,0);
    cout<<'\n';
    }

return 0;
}