function template

1template <class T>
2void swap(T & lhs, T & rhs)
3{
4 T tmp = lhs;
5 lhs = rhs;
6 rhs = tmp;
7}

1template <class T>
2void swap(T & lhs, T & rhs)
3{
4 T tmp = lhs;
5 lhs = rhs;
6 rhs = tmp;
7}
8
9void main()
10{
11  int a = 6;
12  int b = 42;
13  swap<int>(a, b);
14  printf("a=%d, b=%d\n", a, b);
15  
16  // Implicit template parameter deduction
17  double f = 5.5;
18  double g = 42.0;
19  swap(f, g);
20  printf("f=%f, g=%f\n", f, g);
21}
22
23/*
24Output:
25a=42, b=6
26f=42.0, g=5.5
27*/

1#include <iostream>
2#include <string>
3using namespace std;
4
5
6template <class calculator> //Template Definition
7
8calculator addNumber(calculator A, calculator B) {
9	return A + B;
10}
11
12int main() {
13
14	int		a = 7,	   b = 55;
15
16	float   x = 77.77, y = 8.99;
17
18	double  u = 4.44,  v = 7.88;
19
20	string  i = "My ", j = "God!";
21
22
23
24	std::cout << addNumber(a, b) << endl;
25
26	std::cout << addNumber(x, y) << endl;
27
28	std::cout << addNumber(u, v) << endl;
29
30	std::cout << addNumber(i, j) << endl;
31}
32
33//Build Generic Function that can handle multiple type of data