Generic function template : generic parameters « Function « C++

1. C++
2. Function
3. generic parameters

Generic function template

   
#include <iostream>
using namespace std;
   
template <class X> void swapargs(X &a, X &b){
  X temp;
   
  temp = a;
  a = b;
  b = temp;
}
   
int main(){
  int i=10, j=20;
  double x=10.1, y=23.3;
  char a='x', b='z';
   
  cout << "Original i, j: " << i << ' ' << j << '\n';
  cout << "Original x, y: " << x << ' ' << y << '\n';
  cout << "Original a, b: " << a << ' ' << b << '\n';
   
  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;
}
  
    
    
  

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