Templates are used for generic programming. - C++ basic concepts

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• Nihal   -Posted on 08 Oct 15
  Templates are used for generic programming. Using templates, you can create generic functions and classes. By using this technique you can define a general set of operations that will be applied to various types of data. A generic function is created using the keyword template
  template
  void swapargs(T &a, T &b)
  {
  T temp;
  temp = a;
  a = b;
  b = temp;
  }
  int main()
  {
  int i=10, j=20;
  double x=5.10, y=3.30;
  char a='x', b='z';
  
  swapargs(i, j); // swap integers
  swapargs(x, y); // swap floats
  swapargs(a, b); // swap chars
  cout << "Swapped i, j: " << i <<" " << j << '\n';
  cout << "Swapped x, y: " << x << " " << y << '\n';
  cout << "Swapped a, b: " << a << " " << b << '\n';
  return 0;
  }
  Output:
  Swapped i, j: 20 10
  Swapped x, y: 3.3 5.1
  Swapped a, b: z x
  

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