C++ Templates

What are templates ? Templates allow us to write one function or class that works for different data types. Using templates we can write a single class or function for many data types. Example: type safe collection class like stack, queue etc that can handle data of any type.

Function Template: When we write any function with template then its called as Function template.

Class Template: When we write any class with template then its called as Class template.

Function Template example and Source code:

//Header File
#include<iostream>

//Function Template
template <typename T >
T AddNumber(T a, T b)
{
return(a+b);
};

//client
int main()
{
std::cout<<"Function Template"<<std::endl;
int i_res = AddNumber<int>(2, 2);
float f_res = AddNumber<float>(2.2, 2.2);
std::cout<<"Int Result:"<<i_res<<std::endl;
std::cout<<"Float Result:"<<f_res<<std::endl;
return 0;
}