specialization.cpp

C++ sample code, for the book: C++ black book, including templates, exceptional handling.

#include <iostream>
#include <string>
using namespace std;

template <typename T>
void add_one(T &a);

template <> void add_one(string &s); 

int main()
{
    int int_value = 0;
    string string_value("Hello from C++");

    add_one(int_value);

    cout << "The new int_value = " << int_value << endl;

    add_one(string_value);

    return 0;
}

template <typename T>  
void add_one(T &n)
{
    n++;
}

template <> void add_one(string &s)  
{
    cout << "Sorry, adding one to the string \"" << s << "\" is not defined." << endl;
}