Write a macro that swaps two numbers. WAP to use it.

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#include<iostream.h>

#include<conio.h>

#define m( a, b) int temp=a;a=b;b=temp;

void  main()

{

clrscr();

int a,b;

cout<<"enter a and b the numbers that have to swapped in order"<<endl;

cin>>a>>b;

m(a,b);

cout<<"the value of a and b after swapping are,a is :"<<a<<" b is : "<<b;

getch();

}

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Output:-