C programming Interview questions and answers: Pointer to array of string in c programming

Pointer to array of string: A pointer which pointing to an array which content is string, is known as pointer to array of strings.

What will be output if you will execute following code?

#include<stdio.h>

int main(){

char *array[4]={"c","c++","java","sql"};

char *(*ptr)[4]=&array;

printf("%s ",++(*ptr)[2]);

return 0;

}

Output: ava

Explanation:

In this example

ptr: It is pointer to array of string of size 4.

array[4]: It is an array and its content are string.

Pictorial representation:

Note: In the above figure upper part of box represent content and lower part represent memory address. We have assumed arbitrary address.

++(*ptr)[2]

=++(*&array)[2] //ptr=&array

=++array[2]

=++”java”

=”ava” //Since ptr is character pointer so it

// will increment only one byte

Note: %s is used to print stream of characters up to null (\0) character.

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