1D Array in C: The HackerRank Solution

Introduction

A 1D array, also known as a one-dimensional array, is a data structure that stores a collection of elements of the same type. In C, a 1D array is declared using the following syntax:

data_type array_name[array_size];

For example, the following code declares an array of 10 integers:

int arr[10];

Accessing Elements

Elements of a 1D array can be accessed using the index operator []. The index of an element specifies its position within the array. The first element has index 0, the second element has index 1, and so on.

For example, the following code accesses the first element of the array arr:

int first_element = arr[0];

Input and Output

To input elements into an array, you can use the scanf() function. The following code reads 10 integers into the array arr:

for (int i = 0; i 

To output the elements of an array, you can use the printf() function. The following code prints the elements of the array arr:

for (int i = 0; i 

HackerRank Solution

HackerRank is an online platform that offers programming challenges and competitions. One of the challenges on HackerRank is to find the sum of elements in a 1D array.

The following code is a solution to this challenge in C:

#include 

int main() {
  int n;
  scanf("%d", &n);

  int arr[n];
  for (int i = 0; i 

This code first reads the size of the array from the input. It then reads the elements of the array into the array arr.

Next, it initializes a variable sum to 0. It then iterates through the array and adds each element to sum.

Finally, it prints the value of sum to the output.

Story Cases

Here are two story cases that illustrate the use of 1D arrays in C:

• A teacher wants to store the marks of his students in an array. He can use a 1D array to store the marks of all the students in his class.
• A company wants to store the sales figures of its different products in an array. It can use a 1D array to store the sales figures of all its products.

Humorous Language

Here is a humorous example that illustrates the use of 1D arrays in C:

• A programmer is asked to write a program to find the sum of the first 100 positive integers. The programmer uses a 1D array to store the first 100 positive integers. He then iterates through the array and adds each element to a variable. Finally, he prints the value of the variable to the output.

Conclusion

1D arrays are a powerful data structure that can be used to store collections of elements of the same type. They are easy to use and can be used to solve a variety of programming problems.

The HackerRank solution to finding the sum of elements in a 1D array is a simple and efficient solution. It can be used to solve a variety of similar problems.