C Program to Swap values of two numbers using Pointers

C Program to Swap values of two numbers using Pointers, swapping values using pointers in C, Using Pointers Swap two Numbers in C, Printing Memory address and swap numbers using pointers.

#include
#include
void swap(int,int);
void swap1(int *,int *);
 void main()
 {
   int x,y;
   clrscr();
   printf("\n Please Enter two values :");
   scanf("%d%d",&x,&y);
   printf("\n O/P before swap pass by values.........\n");
   printf("\n x=%d\ty=%d",x,y);
   swap(x,y);       //pass by value
   printf("\n after swap by values.........\n");
   printf("\nx=%d\ty=%d",x,y);

   printf("\n before pass by address.........\n");
   printf("\n\tx=%d\ty=%d",x,y);
   swap1(&x,&y);
   printf("\n after pass by address .........\n");
   printf("\\tnx=%d\ty=%d",x,y);
   getch();
   }
 void swap(int a,int b)
 {
  int t;
  t=a;
  a=b;
  b=t;
 }
 void swap1(int *a,int *b)
 {
  int t;
  t=*a;
  *a=*b;
  *b=t;
 }