C++ program to swap two numbers using macros
#include<iostream.h> #include<conio.h> #define SWAP(a,b) {int temp; temp=a; a=b; b=temp;} void main() { clrscr(); int x,y; cout<<“Enter two numbers:”; cin>>x>>y; cout<<“x=”<<x<<” y=”<<y; SWAP(x,y); cout<<“nx=”<<x<<” y=”<<y; getch(); }