Write a program in C++ using function/class template to read two matrices of different data types such as integers and floating point values and perform simple arithmetic operations on these matrices separately and display it.

                                       TEMPLATE     

Templates in C++

A template is a simple and yet very powerful tool in C++. The simple idea is to pass data type as a parameter so that we don’t need to write the same code for different data types. For example, a software company may need sort() for different data types. Rather than writing and maintaining the multiple codes, we can write one sort() and pass the data type as a parameter.

C++ adds two new keywords to support templates: ‘template’ and ‘type name’. The second keyword can always be replaced by the keyword ‘class’.    

PROGRAM

Write a program in C++ using function/class template to read two matrices of different data types such as integers and floating-point values and perform simple arithmetic operations on these matrices separately and display it.   

   

#include<iostream>
using namespace std;
template<class T>
void accept(T a[3][3],int r,int c)
{
   int i,j;
  cout<<"Enter matrix elements";
  for(i=0;i<r;i++)
    {
      for(j=0;j<c;j++)
         {
           cin>>a[i][j];
  
         }
    }
}

template<class T>
void display(T a[3][3],int r,int c)
{
   int i,j;
  cout<<"matrix is\n";
   for(i=0;i<r;i++)
    {
      for(j=0;j<c;j++)
         {
           cout<<a[i][j];
           cout<<"  ";
         }
     cout<<"\n";
    }
}

template<class T>
void add(T a[3][3],T b[3][3],T d[3][3],int r,int c)
 {
     int i,j;
    for(i=0;i<r;i++)
    {
      for(j=0;j<c;j++)
         {
           d[i][j]=a[i][j]+b[i][j];
  
         }
    }
 display(d,r,c);

 }
template<class T>
void sub(T a[3][3],T b[3][3],T d[3][3],int r,int c)
 {
     int i,j;
    for(i=0;i<r;i++)
    {
      for(j=0;j<c;j++)
         {
           d[i][j]=a[i][j]-b[i][j];
  
         }
    }
 display(d,r,c);

 }
template<class T>
void multi(T a[3][3],T b[3][3],T d[3][3],int r,int c)
{
 int i,j,k;
  for(i=0;i<r;i++)
  {
     for(j=0;j<c;j++)
       {
     for(k=0;k<r;k++)
       {
         d[i][j]=d[i][j]+a[i][k]*b[k][j];

       }

      }
  }
display(d,r,c);
}




int main()
{
  int a[3][3],b[3][3],d[3][3],r,c,n=0,m;
  float e[3][3],f[3][3],g[3][3];
  cout<<"Enter no of rows and column";
  cin>>r>>c;
while(n!=3)
{
  if(r==c)
{

   cout<<"Enter 1 for int matrix\nEnter 2 for float matrix\n";
   cin>>m;
if(m==1)
  {
    cout<<"Enter 1 matrix\n";
    accept(a,r,c);
    cout<<"Enter 2 matrix\n";
    accept(b,r,c);
    cout<<"Enter 1 for add\nEnter 2 for sub\nEnter 3 for mul\n";
    cin>>n;
 switch(n)
  {
     case 1:add(a,b,d,r,c);
            break;
     case 2:sub(a,b,d,r,c);
            break;
     case 3:multi(a,b,d,r,c);
            break;
  }
  }
else
{
  cout<<"Enter 1 matrix\n";
  accept(e,r,c);
  cout<<"Enter 2 matrix\n";
  accept(f,r,c);
  cout<<"Enter 1 for add\nEnter 2 for sub\nEnter 3 for mul\n";
  cin>>n;
  switch(n)
   {
     case 1:add(e,f,g,r,c);
            break;
     case 2:sub(e,f,g,r,c);
            break;
     case 3:multi(e,f,g,r,c);
            break;
 
   }
}
}

else
{
cout<<"Not possible";
}
}
return 0;
}

OUTPUT:

Enter no of rows and column
3
3
Enter 1 for int matrix
Enter 2 for float matrix
1
Enter 1 matrix
Enter matrix elements
1 2 3
3 4 5
6 7 8
Enter 2 matrix
Enter matrix elements
3 1 2
6 5 4
7 6 4
Enter 1 for add
Enter 2 for sub
Enter 3 for mul
1
matrix is
4  3  5  
9  9  9  
13  13  12  
Enter 1 for int matrix
Enter 2 for float matrix
2
Enter 1 matrix
Enter matrix elements
2.2 3.3 4.3
6.5 4.4 2.3
7.4 3.2 8.5
Enter 2 matrix
Enter matrix elements
4.4 5.5 4.4
3.3 2.3 4.3
2.3 3.4 6.4
Enter 1 for add
Enter 2 for sub
Enter 3 for mul
1
matrix is
6.6  8.8  8.7  
9.8  6.7  6.6  
9.7  6.6  14.9