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C++ Program to find Square function using single template

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robaa
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2022-11-27
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Write a C++ Program to find Square function of each data-type using single template. Here’s a Simple C++ Program to find Square function using single template in C++ Programming Language.

What are Templates in C++ ?

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robaa
2022-11-27
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Templates are the foundation of generic programming, which involves writing code in a way that is independent of any particular type.

 
 

A template is a blueprint or formula for creating a generic class or a function. The library containers like iterators and algorithms are examples of generic programming and have been developed using template concept.

There is a single definition of each container, such as vector, but we can define many different kinds of vectors for example, vector <int> or vector <string>..

Function Template :

The general form of a template function definition is shown here:

 

template <class type> ret-type func-name(parameter list)

{
// body of function
}

Class Template :

Just as we can define function templates, we can also define class templates. The general form of a generic class declaration is shown here:

template <class type> class class-name

{
.
.
.
}

Below is the source code for C++ Program to find Square function using single template which is successfully compiled and run on Windows System to produce desired output as shown below :

SOURCE CODE : :

/*  C++ Program to find Square function using single template  */

#include <iostream>
using namespace std;

template <class T>
inline T square(T x)
{
   T result;
   result = x * x;
   return result;
};



int main()
{
   int    i, ii;
   float  x, xx;
   double y, yy;

   i = 2;
   x = 2.2;
   y = 2.2;

   ii = square<int>(i);
   cout << i << ": " << ii << endl;

   xx = square<float>(x);
   cout << x << ": " << xx << endl;

   // Explicit use of template
   yy = square<double>(y);
   cout << y << ": " << yy << endl;

   // Implicit use of template
   yy = square(y);
   cout << y << ": " << yy << endl;
   return 0;
}

OUTPUT : :

/*  C++ Program to find Square function using single template  */

2: 4
2.2: 4.84
2.2: 4.84
2.2: 4.84

Process returned 0

Above is the source code and output for C++ Program to find Square function using single template which is successfully compiled and run on Windows System to produce desired output.

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