Лабораторная работа

#include <vcl.h>
#pragma hdrstop
#include <iostream.h>
#include <conio.h>
#include <tchar.h>

#pragma argsused
void sum_d(int **b, int n, int m)
{  int sum = 0, i, j;
  	for (i = 0; i < n; i++)
  for (j = 0; j < m; j++)
   if (i == j)
   {
   sum+=b[i][j];
   }

   cout<<sum;
}

int _tmain(int argc, _TCHAR* argv[])
{int i, n, j,m;
cout<<"Vvedite razmernostb matr."<<endl;
	cin>>n>>m;
 int **a= new int* [n] ;
  for(int i=0; i<n;i++)
				a[i] = new int[m];



   cout<<"Vvedite elemetbI matr.\n";
   for(int i=0; i<n; i++)
				for(int j=0; j<m; j++){
						cout << "\t a[" << i+1 << "][" << j+1 << "] = ";
						cin >> a[i][j];
				}


	sum_d(a,n,m);
    delete []a;
   getch();
	return 0;
}