December 2, 2023
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HackerRank Solution In C

# Dynamic Array in C Hackerrank Solution

Table of Contents

## Dynamic Array in C Hackerrank Solution Explain Video:

Dynamic Array in C Hackerrank Solution , We Discuss About That.

## Problem :

• Objective
• Task
• Output Format
• Input Format
• Sample Input 0
• Sample Output 0
• Solution

## Objective :

Snow Howler is the librarian at the central library of the city of HuskyLand. He must handle requests which come in the following forms:
1 x y : Insert a book with y pages at the end of the xth shelf.
2 x y : Print the number of pages in the yth book on the xth shelf.
3 x : Print the number of books on the xth shelf.Snow Howler has got an assistant, Oshie, provided by the Department of Education. Although inexperienced, Oshie can handle all of the queries of types 2 and 3.

Help Snow Howler deal with all the queries of type 1.

## Task:

Snow Howler is the librarian at the central library of the city of HuskyLand. He must handle requests which come in the following forms:
1 x y : Insert a book with y pages at the end of the xth shelf.
2 x y : Print the number of pages in the yth book on the xth shelf.
3 x : Print the number of books on the xth shelf.

## Input Format:

The first line contains an integer total_number_of_shelves, the number of shelves in the library.
The second line contains an integer total_number_of_queries, the number of requests.
Each of the following total_number_of_queries lines contains a request in one of the three specified formats.

```5
5
1 0 15
1 0 20
1 2 78
2 2 0
3 0```

```78
2```

## Solution Solution :

int* total_number_of_books;

int** total_number_of_pages;

int main(void)
{
int total_number_of_shelves;
scanf(“%d”, &total_number_of_shelves);

int total_number_of_queries;
scanf(“%d”, &total_number_of_queries);

total_number_of_books = (int *)malloc(sizeof(int)*total_number_of_shelves);
total_number_of_pages = (int **)malloc(sizeof(int *)*total_number_of_shelves);

for(int i = 0; i<total_number_of_shelves; i++){
*(total_number_of_books + i) = 0;
}

while(total_number_of_queries–){
int type_of_query;
scanf(“%d”, &type_of_query);

if(type_of_query == 1){
int x, y;
scanf(“%d %d”, &x, &y);
int booksInShelf = *(total_number_of_books + x);
*(total_number_of_pages + x) = (int*)realloc(*(total_number_of_pages+x),sizeof(int)*(booksInShelf+1));
*(*(total_number_of_pages+x)+booksInShelf) = y;
*(total_number_of_books + x) += 1;

## Explanations : Click Me To Get Explain Video

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## What is #Include<stdio.h> ?

#include<stdio.h> is used to included header file in c programming language. It is a Mandetory. It is also Compiler Directives to Include INPUT/OUTPUT related function in our Program. The stdio.h is a file with “.h” extension which is contain the prototypes [not definition] of standard input-output functions used in c program.

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## What is int main() ?

‘int main’ means our perform must come thusme whole number at the top of the execution and that we do so by returning zero at the top of the program. zero is that the normal for the “successful execution of the program”.

## What is Printf and Scanf ?

The printf() and scanf() functions area unit used for input and output in C language. each functions area unit inherent library functions, outlined in stdio.h (header file).

## What is Compiler ?

The language processor that reads the whole program written in application-oriented language as a full in one go and interprets it into identical program in machine language is named a Compiler. Example: C, C++, C#, Java. compilers/assemblers area unit themselves package, and reside where they were put in on the pc. that additionally implies that you just will have as many/few of every as you wish.

## How “Hello, World!” In C program works?

• The #include is a preprocessor command that tells the compiler to include the contents of stdio.h (standard input and output) file in the program.
• The stdio.h file contains functions such as scanf() and printf() to take input and display output respectively.
• If you use the printf() function without writing #include <stdio.h>, the program will not compile.
• The execution of a C program starts from the main() function.
• printf() is a library function to send formatted output to the screen. In this program, printf() displays Hello, World! in C text on the screen.
• The return 0; statement is the “Exit status” of the program. In simple terms, the program ends with this statement.

The #include could be a preprocessor command that tells the compiler to incorporate the contents of stdio.h (standard input and output) enter the program.
The stdio.h file contains functions like scanf() and printf() to require input and show output severally.
If you utilize the printf() perform while not writing #include , the program won’t compile.
The execution of a program starts from the main() perform.
printf() could be a library perform to send formatted output to the screen. during this program, printf() displays hello, World! in C text on the screen.
The return 0; statement is the “Exit status” of the program. In straightforward terms, the program ends with this statement.

#### Hackerrank Answer Dynamic Array in C Hackerrank Solution

Dynamic Array in C Hackerrank Solution may be a sample program designed to acquaint users with most programming languages. Beginners ar introduced to the essential syntax of a programing language by learning the way to print out “Hello World” on the device screen. printf(“Hello World”); This line tells the compiler to show the message “Hello World” on the screen. This line is termed an announcement in C. each statement is supposed to perform some task.

## Conclusion :

So, Learners today you have learned about basic Dynamic Array in C Hackerrank Solution. Now you can solve This If you still have any doubt regarding the problem Just Watch Explanation Video, then Till any Queries , feel free to contact in the comment section.

## Disclaimer:

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