C++ program to swap two variable using template function

C++ program to swap two variable using template function

Today i am going to swap to variable's contents using template function. The below is the C++ program that swap two variable's contents.

// C++ program to swap two variable contants 

// Using template function 

#include<iostream>

using namespace std;

template <typename t>  // defining template function 

void swap(t *var,t *var1){

t var2;

var2=*var; //swaping the contents

*var=*var1;

*var1=var2;

}

int main(){

// displaying the menu to the user

cout<<"1. Swap two integer numbers:";

cout<<"\n2. Swap two float numbers:";

cout<<"\n3. Swap two characters:";

cout<<"\n Enter your choice:";

short i;

cin>>i; // storing the choice of the  user

switch(i){

case 1:

{

int a,b;

cout<<"\n Enter 1st numbers:";

cin>>a;

cout<<"\n Enter 2nd number:";

cin>>b;

cout<<"Before swap:\n a="<<a<<" b="<<b;

swap(&a,&b); // calling template function

cout<<"\nAfter swap:\n a="<<a<<" b="<<b;

break;

}

case 2:

{

float a,b;

cout<<"\n Enter 1st float number:";

cin>>a;

cout<<"\n Enter 2st float number:";

cin>>b;

cout<<"Before swap:\n a="<<a<<" b="<<b;

swap(&a,&b); // calling template function

cout<<"\nAfter swap:\n a="<<a<<" b="<<b;

break;

}

case 3:

{

char a,b;

cout<<"\n Enter 1st character:";

cin>>a;

cout<<"\n Enter 2st character:";

cin>>b;

cout<<"Before swap:\n a="<<a<<" b="<<b;

swap(&a,&b); // calling template function

cout<<"\nAfter swap:\n a="<<a<<" b="<<b;

break;

}

default:

cout<<"\n Invalid choice!!! Try again:";

main(); // asking to the user to re-enter his/her choice

}

} 

Output :-

The output of the above program is:

When user enter his or her choice 1, then the out put will be:

When user enter his or her choice 2, then the output will be :

When user enter his or her choice 3, then the out put will be:

Dear visitors, drop your questions (if any) on the comment section, i will answer your questions. If you have any doubts please comment me, i will try to solve your doubts. Thanks for visiting.