Pass by Value(swapping)

Program for Passby Value-PARAMETER PASSING 

#include<iostream.h>
#include<conio.h>
void swap(int,int);
void main()
{
int a,b;
cout<<"Enter any two numbers";
cin>>a>>b;
swap(a,b);
cout<<"\n the swapped valuesin the main funtion are"<<a<<"and"<<b;
getche();
}
void swap(int x,int y)
{
int t;
t=x;
x=y;
y=t;
cout<<"\n the  swapped values in the function are"<<x<<"and"<<y;

}

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Pass by Address(swapping)

Program for Passby Address-PARAMETER PASSING 

#include<iostream.h>
#include<conio.h>
void swap(int &,int &);
void main()
{
int a,b;
cout<<"Enter any two numbers";
cin>>a>>b;
swap(a,b);
cout<<"\n the swapped valuesin the main funtion are"<<a<<"and"<<b;
getche();
}
void swap(int &x,int &y)
{
int t;
t=x;
x=y;
y=t;
cout<<"\n the  swapped values in the function are"<<x<<"and"<<y;

}

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Pass by reference(swapping)

 Program for Passby reference-PARAMETER PASSING

#include<iostream.h>
#include<conio.h>
void swap(int *,int *);
void main()
{
int a,b;
cout<<"Enter any two numbers";
cin>>a>>b;
swap(&a,&b);
cout<<"\n the swapped valuesin the main funtion are"<<a<<"and"<<b;
getche();
}
void swap(int *x,int *y)
{
int t;
t=*x;
*x=*y;
*y=t;
cout<<"\n the  swapped values in the function are"<<  *x<<"and"<<     *y;

}

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