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Write a program to access elements using pointer

In this program, we will learn to create a C program that will Access Elements of an Array Using Pointer using C programming.
Prerequisites

Before starting with this tutorial we assume that you are best aware of the following C programming topics:

  • Operators in C Programming.
  • Basic Input and Output function in C Programming.
  • Basic C programming.
  • For loop in C Programming.
  • Using pointer in C programming.
Access Elements of an Array Using Pointer:-
As we all know array is a collection of similar data type elements. In an array, only one variable is declared which can store multiple values. First will take the elements of an array from the user.  Then will pass the elements address to the pointer and the will print the elements of array /Access Elements of an Array Using Pointer with the help of C Programming Language.
Pointer is a variable that can store the address of another variable.

  •  Program:

#include<stdio.h>

int main()
{
    int data[5];
    printf("Enter the elements: \n");
    for(int i=0; i<5; ++i)
    scanf("%d", data+i);

    printf("You entered: \n");
    for(int i=0; i<5; ++i)
    printf("%d\n", *(data+i));
    return 0;
}

  •  Output:

Enter the elements: 2 1 5 4 3 You entered: 2 1 5 4 3

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Write a C program to print the address of character and the character of string using pointer

In this program we are going to print address of character and string using pointers. As we know a string is a stream of characters and each character holds different address. So to print address of each character's address we are going to take a pointer array to hold address of each character as in the following example.

  • Program:

#include<stdio.h>
#include<conio.h>
#include<string.h>
void main()
{

    char str[30]="Goeduhub Technologies";
    char c='A';
    int i;

    char *ptr_str[30];
    char *ptr_c=&c;

    for(i=0;i<strlen(str);i++)
    ptr_str[i]=&str[i];


    //Printing value and address of variables on output window
    printf("\nString Entered is : %s\n Address of string :",str);
    for(i=0;i<strlen(str);i++)
    printf("\n%c's address : %p",str[i],ptr_str[i]);
    printf("\nValue of c = %c\nAddress of c = %p",c,ptr_c);
    getch();
}

  • Output:

String Entered is : Goeduhub Technologies Address of string : G's address : 0061FEFA o's address : 0061FEFB e's address : 0061FEFC d's address : 0061FEFD u's address : 0061FEFE h's address : 0061FEFF u's address : 0061FF00 b's address : 0061FF01 's address : 0061FF02 T's address : 0061FF03 e's address : 0061FF04 c's address : 0061FF05 h's address : 0061FF06 n's address : 0061FF07 o's address : 0061FF08 l's address : 0061FF09 o's address : 0061FF0A g's address : 0061FF0B i's address : 0061FF0C e's address : 0061FF0D s's address : 0061FF0E Value of c = A Address of c = 0061FEF9

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