Consider a class Matrix Class Matrix { int a[3][3]; Public: //methods; }; Overload the – (Unary) should negate the numbers stored in the object.

#include<iostream.h>
#include<conio.h>

class Matrix
{
int a[3][3];

public:
void accept()
{
for(int i=0;i<3;i++)
{
  for(int j=0;j<3;j++)
  {
    cout<<endl<<"Enter a value(["<<i+1<<"]["<<j+1<<"]): ";
    cin>>a[i][j];
  }
}
}

void display()
{
  for(int i=0;i<3;i++)
  {
    for(int j=0;j<3;j++)
      cout<<a[i][j]<<"  ";
    cout<<endl;
  }
}

void operator-()
{
  for(int i=0;i<3;i++)
    for(int j=0;j<3;j++)
      a[i][j]=-a[i][j];
}
};//End of class

int main()
{
  Matrix m;
  clrscr();
  cout<<endl<<"Enter Matrix1: ";
  m.accept();
  cout<<endl<<"Matrix1 is: "<<endl;
  m.display();
  -m;
  cout<<endl<<"Matrix1 after negation: "<<endl;
  m.display();
  getch();
  return 0;
}