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Swapping of Two Numbers in C or C Program to Swap Two Numbers

Swapping of Two Numbers in C or C Program to Swap Two Numbers or C program to Swap two numbers without using a third variable

#include <stdio.h>

#include <conio.h> 
void main()
{
   int x, y, temp;



   clrscr();    // to clear screen

  
   printf("Enter the value of x and y\n");
   scanf("%d%d", &x, &y);

   printf("Before Swapping\nx = %d\ny = %d\n",x,y);

   temp = x;
   x    = y;
   y    = temp;



   /*

      without using temp variable, this can be used

   let x=4 and y=5

   x = x + y ;   x=x+y => x=4+5 => x=9 

   y = x - y ;   y=x-y => y=9-5 => y=4  value changed

   x = x - y ;   x=x-y => x=9-4 => x=5  value changed

 

   */ 



 
   printf("After Swapping\nx = %d\ny = %d\n",x,y);


   getch();     // to show answer screen

}

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