HackerRank Say Hello, World! with C++ solution

In this HackerRank Say “Hello, World!” with a C++ programming language problem This is a simple challenge to help you practice printing to stdout. You may also want to complete Solve Me First in C++ before attempting this challenge.

We’re starting out by printing the most famous computing phrase of all time! In the editor below, use either printf or cout to print the string Hello, World! to stdout.

The more popular command form is cout. It has the following basic form:

cout<<value_to_print<<value_to_print;

Any number of values can be printed using one command as shown.

The printf command comes from C language. It accepts an optional format specification and a list of variables. Two examples for printing a string are:

printf(“%s”, string); printf(string);

Note that neither method adds a newline. It only prints what you tell it to.

 

HackerRank Say “Hello, World!” with a c++ problem solution.

#include <iostream>
#include <cstdio>
using namespace std;

int main() {
    printf("Hello, World!");
    return 0;
}

Second solution

#include <iostream>
using namespace std;

int main() {
    string greeting = "Hello, World!";
    cout << greeting << endl;
    
    return 0;
}