Answer to Question #292898 in C++ for Neha Das

Question

Create Matrix class using templates. Write a menu-driven program to perform following

Matrix operations (2-D array implementation): a) Sum b) Difference c) Product d) Transpose

Answer 1

#include<iostream>


using namespace std;


const int r=5,c=5;


template<class T>
class matrix
{
 T m[r][c];
public:
 void get_value()
 {
  for(int i=0;i<r;i++)
  {
   for(int j=0;j<c;j++)
   {
    cout<<"\n M["<<i<<"]["<<j<<"] = ";
    cin>>m[i][j];
   }
  }
 }


 void operator +(matrix ob)
 {
  T p[r][c];


  for(int i=0;i<r;i++)
  {
   for(int j=0;j<c;j++)
   {
    p[i][j]=m[i][j]+ob.m[i][j];
    cout<<" "<<p[i][j]<<" ";
   }
   cout<<"\n";
  }
 }


 void operator -(matrix ob)
 {
  T p[r][c];


  for(int i=0;i<r;i++)
  {
   for(int j=0;j<c;j++)
   {
    p[i][j]=m[i][j]-ob.m[i][j];
    cout<<" "<<p[i][j]<<" ";
   }
   cout<<"\n";
  }
 }


 void operator *(matrix ob)
 {
  T p[r][c];


  for(int i=0;i<r;i++)
  {
   for(int j=0;j<c;j++)
   {
    p[i][j]=0;
    for(int k=0;k<c;k++)
    {
     p[i][j]+=(m[i][k] * ob.m[k][j]);
    }
   }
  }


  for(int i=0;i<r;i++)
  {
   for(int j=0;j<c;j++)
   {
    cout<<" "<<p[i][j]<<" ";
   }
   cout<<"\n";
  }
 }






 void transpose()
 {
  T p[r][c];


  for(int i=0;i<r;i++)
  {
   for(int j=0;j<c;j++)
   {
    p[j][i]=m[i][j];
   }for(int i=0;i<r;i++)
  {
   for(int j=0;j<c;j++)
   {
    cout<<" "<<p[i][j]<<" ";
   }
   cout<<"\n";
  }
  }
  
  


 }


 void display()
 {
  for(int i=0;i<r;i++)
  {
   for(int j=0;j<c;j++)
   {
    cout<<" "<<m[i][j]<<" ";
   }
   cout<<"\n";
  }
  cout<<"\n\n";
 }
};


int main()
{
 matrix<int> m1,m2;
 int choice;


 cout<<"\n Enter Elements of Matrix A\n";
 m1.get_value();
 cout<<"\n Enter Elements of Matrix B\n";
 m2.get_value();


 while(1)
 {
  system("cls");
  cout<<"\n----------MATRIX OPERATIONS-----------\n\n";
  cout<<"\n 1. Sum";
  cout<<"\n 2. Difference";
  cout<<"\n 3. Product";
  cout<<"\n 4. Transpose";
  cout<<"\n 5. Display";
  cout<<"\n 0. EXIT\n";
  cout<<"\n Enter your choice: ";
  cin>>choice;


  switch(choice)
  {
  case 1: cout<<"\n\n Matrices Sum \n\n";
    m1 + m2;
   break;
  case 2: cout<<"\n\n Matrices Subtraction \n\n";
    m1-m2;
   break;
  case 3: cout<<"\n\n Matrices Product \n\n";
    m1*m2;
   break;
  case 4: cout<<"\n\n MATRIX A\n";
    m1.display();
    cout<<"\n\n Transposed Matrix\n";
    m1.transpose();
    cout<<"\n\n MATRIX B\n";
    m2.display();
    cout<<"\n\n Transposed Matrix\n";
    m2.transpose();
   break;
  case 5: cout<<"\n\n MATRIX A\n";
    m1.display();
    cout<<"\n\n MATRIX B\n";
    m2.display();
   break;
  case 0: exit(0);
  default: cout<<"\n\n Invalid choice";
  }
  system("pause");
 };
}