Explain the functioning of code

#1

can you explain the code from line 20 to 26

#2

hello @prashantrsj25
we are just dynamically declaring a n x n matrix.
and then reading elemnts to our matrix.

basically that code is equivalent to following code.

int arr[n][n];
for(int i=0;i<n;i++) {
   for(int j<n;j++){
   cin>>arr[i][j]
}
}
#3

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