#include <stdio.h>
//define function to swap values
void swap(int *a , int *b)
{
int temp;
temp=*a;
*a=*b;
*b=temp;
}
void main()
{
int firstNumber, secondNumber;
//get two number from user and save it in variable firstNumber, secondNumber
printf("\nPlease Enter the value of First Number and Second Number\n");
scanf("%d %d", &firstNumber, &secondNumber);
//print numbers before swapping them (example: firstNumber=10, secondNumber =20)
printf("\nBefore Swapping First Number = %d and Second Number = %d\n", firstNumber,secondNumber);
//call swapping function by passing reference of variables
swap(&firstNumber, &secondNumber);
//print swapped numbers
printf("\nAfter Swapping: First Number = %d and Second Number = %d\n", firstNumber, secondNumber );
}