C program to swap values of two variables using pass by reference method
#include<iostream.h>#include<conio.h>
void main(){ clrscr(); int a,b; void swap(int &,int &); cout<<"Enter two values:"; cin>>a>>b;
cout<<"
Befor swapping:
a="<<a<<" b="<<b; swap(a,b); cout<<"
After swapping:
a="<<a<<" b="<<b; getch();}
void swap(int & x,int & y){ int temp; temp=x; x=y; y=temp;}
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