60funcintemp.cpp

#include<iostream>
#include<cstring>
#include<fstream>
using namespace std;

/*
        FUNCTION TEMPLATES :

            This enables us to create functions that can take parameters in a non specified datatype and can be given any value in the main

Syntax: 
        template <class T1, class T2,...>
        {{return-type}} function_name( T1 arg1, T2 arg2,...)
        {
            body...
        }
*/

template <class K1, class K2>
float Average(K1 a, K2 b)
{
    float avg = (a + b)/2.0;
    return avg;
}
template <class K1>
K1 function(K1 a, K1 b)
{
    return a + b;
}
template <class K1>
void swapp(K1 &a, K1 &b)
{
    K1 temp = a;
    a = b;
    b = temp;
}

int main()
{
    // Doesn't require <> declaration or parameter passing
    float a;
    a = Average(4, 7.4);
    cout<<"Average of given numbers is : "<<a<<endl;

    float b = function(1, 5); 
    cout<<endl<<"b is : "<<b<<endl;
    b = function(1.4, 9.5);
    cout<<endl<<"b is : "<<b<<endl;
     b = function('3', 'i');
    cout<<endl<<"b is : "<<b<<endl;
     b = function(1.0494847, 5.7123789);
    cout<<endl<<"b is : "<<b<<endl;

int x = 2, y = 7;
    swapp(x, y);
    cout<<endl<<x<<endl<<y<<endl;
    return 0;
}