Video Pertemuan 2 Pengenalan Pemrograman

Main Ideas / Concepts Covered

1. Getting Started with the Coding Platform

1. Register/sign up and enter your email.
2. Follow the on-screen setup prompts (the presenter notes to “just follow it”).
3. If a verification code is requested, enter the code.
4. Verify using a link (click it to confirm verification).
5. Create a name.
6. In the editor interface, choose Write and Run Code.
7. Wait for the status indicator to turn green (meaning the user is verified).
8. Enter a project name.
9. Create a C++ file using the + button.
   • Example file name mentioned: CPP (used to create a C++ file).

2. Attendance / Post-Test Workflow

• A QR code contains attendance and post-test information.
• Viewers are instructed to scan the QR code first.
• The session will be continued by another person (“This will be continued by Kak Habib”).

3. Terminal Introduction: Basic Commands

• pwd
  • Shows your current directory/location (example mentioned: user/home).
• ls
  • Lists files and directories in the current directory (example context includes folders like “practical 2” and “test 1”).
• mkdir (“MK de” / “MK de” in subtitles)
  • Creates a new directory.
  • Example intent: create something like test 2.
• cd (Change directory)
  • Moves into other directories (examples mentioned: test 2, “practical 2”).
  • Subtitles describe a case where cd “comes out like that” (returns/acts like leaving out when the target ends up empty or invalid).

4. Text Editors and Creating Code Files

• Two editors are mentioned: FIM and Nano.
  • The presenter uses FIM because Nano is not available (“not downloaded”).
• Creating a file with FIM
  • Use a command like: fim create <filename>.c++ (exact subtitle wording varies).
• Writing code inside the editor
  • A simple C++ program is written (example includes printing “my name” and an npm value).
• Saving/exiting in FIM
  • Use Shift + “/” to reach the editor command/saving interface.
  • To save/write: type w.
  • Then exit as needed.

5. Compiling and Running C++

• Compile using a g++-type compiler command (the subtitles explicitly mention g++ / compiler for C++, phrased as “G+”).
• Compile the source file (example: “create file.c++”).
• Use -o to specify the output executable name.
• Run the executable using:
  • ./<executable_name> (subtitles refer to “dot slash”).
• Example output (format partially unclear):
  • Terminal prints something like: “Hello, my name is Habib and my npm is 25 …”

6. Explaining Code: Variables, Data Types, Operators, and Basics

Variables

• A variable is a container/place to store data.
• Example variables: name and npm.
• Example data type used: string
• Example values mentioned: “Habib” and a text value for “npm”.

Data Types Overview

• String
  • Stores text (collections of characters).
• Integer
  • Stores whole numbers.
• Short vs Long (integers)
  • short: for smaller integer ranges; described as more efficient when values fit.
  • long integer: for very large numbers to avoid overflow.
• Float vs Double
  • float: stores fractional numbers (example: 0.8754).
  • double: similar to float but with higher precision.
• Char
  • Stores one character/symbol.
• Boolean
  • Stores true or false (used in conditions like if true / if false).

Bits vs Bytes Note

• 1 byte = 8 bits
  • To convert bits to bytes, divide by 8.

Operators

• Arithmetic operators (like a calculator):
  • add, subtract, divide
  • multiplication uses *
• Assignment vs comparison (subtitle unclear, but gestured):
  • The distinction between = and == is mentioned conceptually.
• Compound assignment shortcuts:
  • +=, and similar forms for subtraction/multiplication/division.

7. Deleting Files and Directories

• rm removes files.
  • Example: deleting “practical 2” fails because it’s a directory.
• For directories, use recursive removal:
  • rm -r (subtitles mention “RM de” / remove directory).
• Example described outcome:
  • After removing with the directory command, “practical 2” is deleted.

8. Post-Test / Assignment Instructions

• Code should use your:
  • name
  • npm
• Create/publish a link:
  • Steps described: go to the file → publish the file → publish pad/editor → a link appears.
• Submit:
  • Either:
    • submit the link + screenshots of code/comments, or
    • submit the link and a screenshot of what was requested (subtitles imply you can screenshot just the comment/code you made).
• Put results into a document and submit it to the assigned collection folder/location (“collect it in the assigned font/folder” in subtitles).

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Methodology / Step-by-Step Instructions

A) Platform Setup (Registration + File/Project Creation)

1. Register/sign up on the platform.
2. Enter your email.
3. If prompted, enter the verification code.
4. Click the verification link.
5. Create a name for your profile.
6. Open the editor via Write and Run Code.
7. Wait for the status indicator to turn green.
8. Enter a project name.
9. Create a new C++ file:
   • Click the + button.
   • Provide a filename (example given: CPP).
   • Ensure it is created as a C++ file.

B) Terminal Commands to Learn

• Check current directory: pwd
• List current files/directories: ls
• Create a directory: mkdir (subtitles show “MK de”)
  • Example intent: create something like test2
• Change directories:
  • Use cd <directory_name> (examples include moving into practical/test folders).
  • Use cd carefully to return to the previous/parent directory (as described in subtitles).

C) Create, Save, Compile, and Run a C++ Program

• Open the editor (FIM used here)
  • Example intent: fim create <file>.c++
• Write C++ code (example prints name and npm).
• Save:
  • Press Shift + “/” to access command/saving interface.
  • Enter w to write/save.
  • Exit afterward as needed.
• Compile:
  • Use a g++-type compiler command.
  • Provide the source filename.
  • Use -o to name the output executable.
• Run:
  • Execute with ./<executable_name>.
• Confirm output appears (name and npm output is shown as the example).

D) Deleting Items in the Filesystem

• Delete a file: use rm
• Delete a directory:
  • Use a recursive removal option (e.g., rm -r) because rm alone won’t delete directories.

E) Submission / Post-Test Steps

1. Scan the QR code (attendance + post-test info).
2. Write your own code using your name and npm.
3. Create a link by publishing:
   • Go to the file → publish file → publish pad → copy the link.
4. Submit:
   • the link
   • and screenshots of the code and/or comments/commands practiced
5. Compile everything into a document and submit to the requested collection method/location.

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Speakers / Sources Mentioned

• Kak Habib (person who continues the session)
• Current presenter (unnamed; explains the setup, commands, and concepts)
• QR code / post-test assignment materials (for attendance and tasks)