Question

Write a function template sort that takes two references to generic objects and switches them if the first argument is larger than the second. It is only assumed that operator<() and a default constructor are defined for the objects considered.

Answer 1

main.cpp

#include <iostream>
using namespace std;

template <typename T>
void templateSort(T &n1, T &n2)
{
   T temp;
   temp = n1;
   n1 = n2;
   n2 = temp;
}

int main()
{
   int i1,i2;
   cout<<"Enter two integer : ";
   cin>>i1>>i2;
   cout<<endl;
   cout << "Before passing data to function template.\n";
   cout << "i1 = " << i1 << "\ni2 = " << i2;
   if(i1>i2){
   templateSort(i1, i2);
   }
  
        cout << "\n\nAfter passing data to function template.\n";
   cout << "i1 = " << i1 << "\ni2 = " << i2;
  
   return 0;
}

Output:-

Enter two integer : 10 5
Before passing data to function template.
i1 = 10
i2 = 5

After passing data to function template.
i1 = 5
i2 = 10