diagonal factorial matrix

#include <iostream>
using namespace std;




void fact(int num){
   int fact = 1;
   
   for(int i = 1;i<num;i++){
     fact = fact*i;
   }
   cout<<fact<<" ";
  
}
int main() {

int n;
cout<<"enter the size of matrix n*n"<<endl;
cin>>n;

int A[n][n];

cout<<"enter the ements of matrix"<<endl;
for(int i =0; i<n ; i++){

for(int j =0; j<n ;j++){

cin>>A[i][j];

}
}

cout<<"****************************factorial diagonal matrix*********************"<<endl;
int num;
for(int i =0; i<n ; i++){

for(int j =0; j<n ;j++){

if(i == j){
    num = A[i][j];
    fact(num);
}

else if((i+j) == (n-1)){
    num = A[i][j];
    fact(num);
}

else{
     cout<<"0"<<" ";
}

}cout<<endl;

}


return 0;
}