Hello World in C Hackerrank Solution: We are going to solve HackerRank’s “30 Days of Code” programming problem on day 0 hello world HackerRank solution in C, C++, and Java language with complete code, logic explanation, output, and example. 30 days of code solutions are given by a very famous website HackerRank, you have to solve a daily day 0 to day 30, a total of 30 programming problems in any language, the most popular programming problem are C, C++and Java. Hello world hackerrank solution in java.
Table of Contents
Hello World Hackerrank Solution
Task: Day 0 Hello World HackerRank Solution, To complete this challenge, you must save a line of input from stdin to a variable, and print Hello, World. on a single line, and finally, print the value of your variable on a second line.
You’ve got this!
Note: The instructions are Java-based, but we support submissions in many popular languages. You can switch languages using the drop-down menu above your editor, and the inputString variable may be written differently depending on the best-practice conventions of your submission language.
Input Format
A single line of text denoting inputString(the variable whose contents must be printed).
Output Format
Print Hello, World. on the first line, and the contents of inputString on the second line.
Sample Input
Welcome to 30 Days of Code!
Sample Output
Hello, World.
Welcome to 30 Days of Code!
Explanation
On the first line, we print the string literal Hello, World. How to solve the Hello World program in HackerRank?On the second line, we print the contents of the inputString variable which, for this sample case, happens to be Welcome to 30 Days of Code! If you do not print the variable’s contents to stdout, you will not pass the hidden test case. Visit: Hackertank.
Visit the hacker rank 30 Days of Code challenge page and open day 0 “hello world” programming problem.
Hello World in C Hackerrank Solution
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>
int main()
{
/* Declare a variable named 'input_string' to hold our input.*/
char input_string[105];
/* Read a full line of input from stdin and save it to our variable, input_string.*/
scanf("%[^\n]", input_string);
/* Print a string literal saying "Hello, World." to stdout using printf.*/
printf("Hello, World.\n");
/* TO DO: Write a line of code here that prints the contents of input_string to stdout.*/
/* Solution starts from here */
printf("%s",input_string);
/* Solution ends here */
return 0;
}Say Hello World With C++ Hackerrank Solution
#include <iostream>
using namespace std;
int main()
{
string inputString;
/* get a line of input from cin and save it to our variable*/
getline(cin, inputString);
/* Your first line of output goes here*/
cout << "Hello, World." << endl;
/* Write the second line of output*/
/* Solution starts from here */
cout << inputString << endl;
/* Solution ends here */
return 0;
}Hello World Program in Java Hackerrank Solution
How to print Hello World in Java HackerRank solution?
import java.util.Scanner;
public class HelloWorld {
public static void main(String[] args)
{
/* Create a Scanner object to read input from stdin.*/
Scanner scan = new Scanner(System.in);
/* Read a full line of input from stdin and save it to our variable, inputString.*/
String inputString = scan.nextLine();
/* Close the scanner object, because we've finished reading
all of the input from stdin needed for this challenge.*/
scan.close();
/* Print a string literal saying "Hello, World." to stdout.*/
System.out.println("Hello, World.");
/* Print the contents of inputString to stdout.*/
/* Solution starts from here */
System.out.println(inputString);
/* Solution ends here */
}
}The Output of Hello World Hackerrank Solution
