1D Arrays in C – Hacker Rank Solution | HackerRank Programming Solutions | HackerRank C Solutions

Hello Programmers/Coders, Today we are going to share solutions of Programming problems of HackerRank of Programming Language C . At Each Problem with Successful submission with all Test Cases Passed, you will get an score or marks. And after solving maximum problems, you will be getting stars. This will highlight you profile to the recruiters.

In this post, you will find the solution for 1D Arrays in C-HackerRank Problem. We are providing the correct and tested solutions of coding problems present on HackerRank. If you are not able to solve any problem, then you can take help from our Blog/website.

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C is one of the most widely used Programming Languages. it is basically used to build Operating System. C was developed by Dennis Ritchie in 1972. Below are some examples of C Programming which might you understanding the basics of C Programming.


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;

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