tempalte in c 2b 2b

1#include <iostream>
2#include <vector>
3#include <cstdlib>
4#include <string>
5#include <stdexcept>
6
7using namespace std;
8
9template <class T>
10class Stack { 
11   private: 
12      vector<T> elems;    // elements 
13
14   public: 
15      void push(T const&);  // push element 
16      void pop();               // pop element 
17      T top() const;            // return top element 
18      
19      bool empty() const {      // return true if empty.
20         return elems.empty(); 
21      } 
22}; 
23
24template <class T>
25void Stack<T>::push (T const& elem) { 
26   // append copy of passed element 
27   elems.push_back(elem);    
28} 
29
30template <class T>
31void Stack<T>::pop () { 
32   if (elems.empty()) { 
33      throw out_of_range("Stack<>::pop(): empty stack"); 
34   }
35   
36   // remove last element 
37   elems.pop_back();         
38} 
39
40template <class T>
41T Stack<T>::top () const { 
42   if (elems.empty()) { 
43      throw out_of_range("Stack<>::top(): empty stack"); 
44   }
45   
46   // return copy of last element 
47   return elems.back();      
48} 
49
50int main() { 
51   try {
52      Stack<int>         intStack;  // stack of ints 
53      Stack<string> stringStack;    // stack of strings 
54
55      // manipulate int stack 
56      intStack.push(7); 
57      cout << intStack.top() <<endl; 
58
59      // manipulate string stack 
60      stringStack.push("hello"); 
61      cout << stringStack.top() << std::endl; 
62      stringStack.pop(); 
63      stringStack.pop(); 
64   } catch (exception const& ex) { 
65      cerr << "Exception: " << ex.what() <<endl; 
66      return -1;
67   } 
68} 

1#include <iostream>
2#include <string>
3
4using namespace std;
5
6template <typename T>
7inline T const& Max (T const& a, T const& b) { 
8   return a < b ? b:a; 
9}
10
11int main () {
12   int i = 39;
13   int j = 20;
14   cout << "Max(i, j): " << Max(i, j) << endl; 
15
16   double f1 = 13.5; 
17   double f2 = 20.7; 
18   cout << "Max(f1, f2): " << Max(f1, f2) << endl; 
19
20   string s1 = "Hello"; 
21   string s2 = "World"; 
22   cout << "Max(s1, s2): " << Max(s1, s2) << endl; 
23
24   return 0;
25}