December 7, 2023
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HackerRank Solution In C

# Pointers in C HackerRank Solution

## Pointers in C HackerRank Solution Explain Video :

Pointers in C HackerRank Solution , We Discuss About That Pointers HackerRank Solution In C

## Problem :

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

## Objective :

In this challenge, you will learn to implement the basic functionalities of pointers in C. A Pointer in C is a way to share a memory address among different contexts (primarily functions). They are primarily used whenever a function needs to modify the content of a variable, of which it doesn’t have ownership.
In order to access the memory address of a variable,val, we need to prepend it with & sign. E.g., &val returns the memory address of val.
This memory address is assigned to a pointer and can be shared among various functions. E.g. int *p = &val will assign the memory address of val to pointer p. To access the content of the memory to which the pointer points, prepend it with a *. For example, *p will return the value reflected by val and any modification to it will be reflected at the source (val).
 void increment(int *v) { (*v)++; } int main() { int a; scanf("%d", &a); increment(&a); printf("%d", a); return 0; } 

You have to complete the function void update(int *a,int *b) which reads two integers as argument, and sets a with the sum of them, and b with the absolute difference of them.

– a = a+b
– b = |a-b|

## Input Format:

The input will contain two integers, a and b, separated by a newline.

4

5

9

1

## Solution Solution :

#include <stdio.h>
void update(int *a,int *b) {

int aa = *a;
*a = *a+*b;
*b = aa-*b;
if(*b < 0)*b *= -1;
}
int main() {

int a, b;
int *pa = &a, *pb = &b;
scanf(“%d %d”, &a, &b);
update(pa, pb);
printf(“%d\n%d”, a, b);
return 0;
}

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## Explanations : Click Me To Get Explain Video

Firstly, You have to Copy The Code Here and Go to Your Pointers in C HackerRank Solution Questions Problem. Then You Have to go Submission Page. Now You Have Pasted this Copy Code and Run This Code by Compiler. You Can See All Task Should be Done. All Private and Public Cases Passed. Then Submit Your Code Finally.

## 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 “Pointers in C HackerRank Solution” 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 C Language Welcome To 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 Pointers in C HackerRank Solution

Pointers 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 Pointers 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:

The above problem Pointers in C HackerRank Solution is generated by HackerRank but the solution is provided by Us. (Check DMCA for Others)