Challenge 2: Remember a Friend's Name! 🚀

Welcome to this challenge! Work with Robo 🤖 to solve this problem step-by-step using algorithms and flowcharts.

🎬 The Story

Robo meets a new user. Instead of saying a generic hello, help Robo ask for their name, remember it, and say a personalized "Hello [Name]!".

📝 The Algorithm

1. Start (Begin the program)
2. Ask the user's name (Output prompt)
3. Read the name and save it in a box called name (Input)
4. Display "Hello " + name (Combined Output)
5. Stop (End the program)

:::note What is a Variable? A Variable is like a labeled storage box in the computer's memory. In this challenge, we created a box labeled name to store whatever name the user types in. :::

📊 The Flowchart

Here, the parallelogram is used twice: once to read the input name, and once to output the combined message.

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💻 From Flowchart to Code

Here is how to read input and combine it with a greeting in Python, Java, and C:

Python

# Ask and read name
name = input("What's your name? ")
# Greet by name
print("Hello " + name + "!")

Java

import java.util.Scanner;

public class GreetByName {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.print("What's your name? ");
        // Read name input
        String name = sc.nextLine();
        // Greet by name
        System.out.println("Hello " + name + "!");
    }
}

C

#include <stdio.h>

int main() {
    char name[50];
    printf("What's your name? ");
    // Read name input (up to 49 chars, no spaces)
    scanf("%49s", name);
    // Greet by name
    printf("Hello %s!\n", name);
    return 0;
}

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🔗 Next Steps

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