1D Arrays in C – Hacker Rank Solution

1D Arrays in C - Hacker Rank Solution
1D Arrays in C – Hacker Rank Solution


An array is a container object that holds a fixed number of values of a single type. To create an array in C, we can do int arr[n];. Here, arr, is a variable array which holds up to 10 integers. The above array is a static array that has memory allocated at compile time. A dynamic array can be created in C, using the malloc function and the memory is allocated on the heap at runtime. To create an integer array, arr of size nint *arr = (int*)malloc(n * sizeof(int)), where arr points to the base address of the array.In this challenge, you have to create an array of size n dynamically, input the elements of the array, sum them and print the sum of the elements in a new line.

Input Format

The first line contains an integer,n.The next line contains n space-separated integers.


  • 1<=n<=1000
  • 1<=a<=1000

Output Format

Print in a single line the sum of the integers in the array.

Sample Input 0

16 13 7 2 1 12 

Sample Output 0


Sample Input 1

1 13 15 20 12 13 2 

Sample Output 1


1D Arrays in C – Hacker Rank Solution

#include <stdio.h>
#include <stdlib.h>

int main()
    int n, *arr, i, sum = 0;
    scanf("%d", &n);
    arr = (int*) malloc(n * sizeof(int));
    for(i = 0; i < n; i++) {
        scanf("%d", arr + i);

    for(i = 0; i < n; i++) {
        sum += *(arr + i);

    printf("%d\n", sum);
    return 0;

Disclaimer: The above Problem (1D Arrays in C ) is generated by Hackerrank but the Solution is Provided by Chase2Learn. This tutorial is only for Educational and Learning purposes. Authority if any of the queries regarding this post or website fill the following contact form thank you.

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