Overload a function template declaration : template function « template « C++ Tutorial

1. C++ Tutorial
2. template
3. template function

#include <iostream>
using namespace std;

template <class X> void f(X a)
{
  cout << "Inside f(X a)\n";
}

template <class X, class Y> void f(X a, Y b)
{
  cout << "Inside f(X a, Y b)\n";
}

int main()
{
  f(10);     // calls f(X)
  f(10, 20); // calls f(X, Y)

  return 0;
}

Inside f(X a)
Inside f(X a, Y b)