#include <iostream>
using namespace std;
Template<class T>
T **init+a(int n) {
         T **a=new double*[n[;
          for (int i=0;i<n;i++)
                   a[i]=new double[n];
          for(int i=0;i<n;i++)
               for(int j=o;j<n;j++){
                     a[i][j]=(i==j)?1:0;
               }
     }
      return a;
      }
Template <class T>
void print_a(T **a,int n){
        for(int i=0;i<n;i++){
                   for (int j=0;j=n;j+=) {
                          cout << a[i][j] << "\t";
              }
              }
              return a;
              }


int main (void) {
        int n;
        cout << "Dose n:";
        cin >. n;
        double **a,**b,**c;
        a=init_a<double> (n);
        print_a<double> (a,n);

        return 0;
        } 

}