VariadicParameterExmaple

#include <iostream>
#include <string>
#include <initializer_list>

//This example copied from Stackoverflow.com .I can't understand how to use ... yet 
//What I understand now is you can't declare ... in a normal function defination , but I don't know how to use it yet .

template <typename T>
void func(T t)
{
    std::cout << t << std::endl ;
}

template<typename T, typename... Args>
void func(T t, Args... args) // recursive variadic function
{
    std::cout << t <<std::endl ;

    func(args...) ;
}

template <class T>
void func2( std::initializer_list<T> list )  //the function demonstrates how to use standard initializer list 
{                                   //initializer list is used for variable number of variables of same type 
    for( auto elem : list )
    {
        std::cout << elem << std::endl ;
    }
}

int main()
{
    std::string
    str1( "Hello" ),
    str2( "world" );

    func(1,2.5,'a',str1);   //passing ,int ,float , char , string into a variadic function

    func2( {10, 20, 30, 40 }) ;  //demo 1
    func2( {str1, str2 } ) ;   //demo 2
}