Pointers and Strings

Pointers and Strings:

            Operations on string can be performed in an easier way using pointers.  A String is a character array which is declared as follows.

                                    char str [10];

            Pointers to a string can be declared using a variable which holds base address of the string. Pointers to a string can be declared as follows.

                                                char *p;

The base address of a string can be stored in a pointer variable as follows.

                                                p=str;

  WAP to read and display a string using pointers.

#include<stdio.h>

#include<conio.h>

void main ()

{

      char str[10], *p;

      printf(“enter any string”);

      gets(str);

p=str;

while(*p!=’\0’)

{

      printf(“%c”,*p);

      p++;

 }

}

Write a program to find length of a string using pointers.

#include<stdio.h>

#include<conio.h>

void main ()

      {

                  char str[10], *p,*q;

                  printf(“enter any string”);

                  gets (str);

                  p=str;

                  q=p;

while(*p!=’\0’)

{

p++;

}

printf(“length=%d”,p-q);

}