Function template

Function template

Aim:
To write a C++ program to swap two variables using function template.
Algorithm:
Step 1: Declare the template to perform swap operation.
Step 2: In the main, get the values for integer data type
  2.1 Call the swap function.
2.2 Display the swapped values.
Step 3: Get the values for float data type
  3.1 Call the swap function.
3.2 Display the swapped values.
Step 4: Get the values for character data type
  4.1 Call the swap function.
4.2 Display the swapped values.
Program:
#include<iostream.h>
#include<conio.h>

template<class T>
void swap(T &x,T &y)
{
  T t;
  t=x;
x=y;
y=t;
}

void main()
{
  clrscr();
int a,b;
  cout<<"\nENTER THE  INTEGER VALUES:\n";
  cin>>a>>b;
  swap(a,b);
  cout<<"\nTHE SWAPPED VALUES ARE:"<<a<<"\t"<<b;

  float c,d;
  cout<<"\n\nENTER THE  FLOAT VALUES:\n";
  cin>>c>>d;
  swap(c,d);
  cout<<"\n THE SWAPPED VALUES ARE:"<<c<<"\t"<<d;

  char ch1,ch2;
  cout<<"\n\nENTER THE  CHARACTER VALUES:\n";
  cin>>ch1>>ch2;
  swap(ch1,ch2);
  cout<<"\n THE SWAPPED VALUES ARE:"<<ch1<<"\t"<<ch2;
  getch();
}


Output:

ENTER THE INTEGER VALUES: 67 12

THE SWAPPED VALUES ARE: 12   67


ENTER THE FLOAT VALUES: 8.9 1.2

THE SWAPPED VALUES ARE: 1.2   8.9


ENTER THE CHARACTER VALUES: r a

THE SWAPPED VALUES ARE: a       r