HackerRank "Hello World!" Solution in C

Objectives
In this challenge, we will learn some basic concepts of C that will get you started with the language. You will need to use the same syntax to read input and write output in many C challenges. As you work through these problems, review the code stubs to learn about reading from stdin and writing to stdout.

Task
This challenge requires you to print Hello, World! on a single line, and then print the already provided input string to stdout. If you are not familiar with C. you may want to read about the printf() command.

Example

s  = "Life is beautiful"

The required output is:

Hello, World!  
Life is beautiful  

Function Description

Complete the main() function below.

The main() function has the following input:

• string s: a string

Prints

• two strings: "Hello, World!" on one line and the input string on the next line.

Input Format

There is one line of text, s.

Sample Input 0

Welcome to C programming.

Sample Output 0

Hello, World!
Welcome to C programming.

HackerRank "Hello World!" Solution in C (Sample-1)

#include <stdio.h>

int main() {

    char s[1000];

    // Print the first required line

    printf("Hello, World!\n");

    // Read a line of input from stdin (standard input)

    fgets(s, sizeof(s), stdin);

    // Print the input string

    printf("%s", s);

    return 0;

}

HackerRank "Hello World!" Solution in C (Sample-2)

#include <stdio.h>

int main() {

    char s[1000];

    printf("Hello, World!\n");

    fgets(s, sizeof(s), stdin);

    printf("%s", s);

    return 0;

}

HackerRank "Hello World!" Solution in C (Sample-3)

#include <stdio.h>

int main() {

    char s[1000];

    printf("Hello, World!\n");

    scanf("%[^\n]%*c", s);  // Read until newline

    printf("%s\n", s);

    return 0;

}