C PRACTICAL / REVERSE STRING PROGRAM BY USING POINTER IN

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>> /* REVERSE STRING PROGRAM BY USING POINTER IN C PROGRAMMING */

#include<stdio.h>

#include<conio.h>

void main()

{

  char *s1; // s1 is pointer variable

  int l,e,s;

  // l=string length, e=string end, s=string start

  clrscr();

  printf("enter your string :");

  gets(s1);

  l=0;

  while(*(s1+l)!='\0')

  {

     l++;

  }

  s = 0;

  e = l-1;

  while(s<e)

  {

    char t;

    t = *(s1 + s);

    *(s1+s)=*(s1+e);

    *(s1+e)=t;

    s++;

    e--;

  }

  printf("ans is : %s\n",s1);

  getch();

}

       /*  OUTPUT  */

============================

enter your string : DNP DEVELOPER

ans is : REPOLEVER PND

* * * * * * * * * * * * * *

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