Grammatic error fix, Comments in code for easy understanding, more explanation on msg macro

[NtemKenyor]

Problem

The original lesson/code provided lacked clarity in certain areas, particularly in the explanation of paths and scope, function declarations, the concept of Solana programs, entry point syntax, and error handling. These issues might lead to confusion for readers, especially those new to Rust or Solana programming.

Summary of Changes

1. Paths and Scope Clarification:

   • Expanded the explanation of the use statement, highlighting its importance in making code more readable and maintainable by bringing items into scope.

2. Function Declaration Explanation:

   • Added a more detailed explanation regarding references and slices in function arguments, emphasizing the significance of slices in handling inputs of varying lengths efficiently.

3. Entry Point Code - Syntax and Comments:

   • Revised the entry point code to ensure accuracy and added detailed comments to enhance understanding. This includes explanations of the imported modules and the purpose of each section of the code.

4. msg! Macro and Error Handling:

   • Provided additional information on the usage of the msg! macro for logging and introduced basic concepts of error handling within Solana programs.

[mikemaccana]

I reviewed this a while ago but forgot to click the button. Please see the comments above! As someone else's changes were merged you will also need to resolve some conflicts.

[NtemKenyor]

I reviewed this a while ago but forgot to click the button. Please see the comments above! As someone else's changes were merged you will also need to resolve some conflicts.

okay I am on it.

[NtemKenyor]

@mikemaccana thank you for making out some time to review this work. please if you have any more changes you would love me to implement, I would be glad to make the fix.

I also messaged you on Telegram to find out if we can add more language support to "intro-to-solana".

[NtemKenyor]

Hello @mikemaccana and @nickfrosty

Hope you're both doing great 👍. I have made the necessary adjustments and I also updated arbitrary-cpi.md to it's most recent form to avoid any conflicts. Pls 🙏 merge if it's ok. Thank you and best regards...

[NtemKenyor]

Hello @mikemaccana and @nickfrosty

Hope you're both doing great 👍. Updated my Pull request so it's updated and I have only focused on the required file: content/courses/native-onchain-development/hello-world-program.md

Please 🙏 help review as to merge. I understand that reviewing may be stressful - I'm grateful.

[NtemKenyor]

I Focused on the reviewed section alone. If there are any other changes you would love me to make, please let me know.

[mikemaccana]

Minor fix but ready to go afrerwards.

[NtemKenyor]

@mikemaccana , @nickfrosty please don't forget to include my contribution.

Hello Bro 👋 hope you're doing good? I'm sorry for bordering/disturbing you but I just felt it's been a while. Pls help merge this pull request or give me further advise. Thank you very much for your understanding.

I'm grateful 🥰