How programs are compiled or interpreted in Intro to Computing - Flowchart Walkthrough

Process Overview

This flowchart explains how a computer program is turned into actions the computer can perform. It shows the two main ways: compiling and interpreting. Compiling changes the whole program into machine code before running it, while interpreting reads and runs the program line by line.

Flowchart

Write Source Code

Yes No↓

Compile Source Code

↓

Machine Code

↓

Run Program

This flowchart shows the two main paths for running a program: compiling the entire source code into machine code before running, or interpreting the source code line by line during execution.

Step-by-Step Trace - 5 Steps

Step 1: Write the source code in a programming language.

Step 2: Decide if the program will be compiled or interpreted.

Step 3: If compiled, the source code is converted into machine code all at once.

Step 4: If interpreted, the source code is read and executed line by line.

Step 5: Run the program using the machine code or interpreter.

Diagram

Source Code (Text)
      |
      v
+------------------+       +---------------------+
|   Compiler       |       |   Interpreter        |
| (Transforms all  |       | (Reads and runs code |
|  code at once)   |       |  line by line)       |
+------------------+       +---------------------+
      |                            |
      v                            v
Machine Code (Binary)        Direct Execution
      |                            |
      +------------+---------------+
                   v
             Computer CPU
                   |
                   v
             Program Runs

This diagram shows how source code is either fully transformed into machine code by a compiler or directly executed line by line by an interpreter, both leading to the CPU running the program.

Flowchart Quiz - 3 Questions

What does a compiler do with the source code?

A Reads and runs the source code line by line

B Transforms the entire source code into machine code before running

C Deletes the source code after writing

D Runs the program without any changes

Key Result

Programs can be run by first converting all code into machine language (compiling) or by translating and running code one line at a time (interpreting).