Compiler vs. Interpreter: What's the Difference?
Read the comparison below, or explore it visually. Create a visual lesson comparing compiler and interpreter using available credits or plan allowance.
A compiler translates a whole program into machine code before it runs, producing a separate executable file, while an interpreter reads and executes the source code statement by statement while the program runs. Compiled programs, such as those written in C, usually run faster; interpreted ones, such as Python scripts, are quicker to test and change. Many modern languages combine both approaches.
At a glance
| Compiler | Interpreter | |
|---|---|---|
| Translation timing | Whole program, before it runs | Statement by statement, while it runs |
| Output | A standalone executable file | No separate executable file |
| Run speed | Usually faster | Usually slower |
| Error reporting | Reports many errors before the program runs | Stops at the first error it reaches |
| Example languages | C, C++, Rust, Go | Python, Ruby, classic BASIC |
Which should you use?
A compiler suits software where speed and easy distribution matter, such as a game engine or operating system written in C++ and shipped as ready-to-run executables.
An interpreter suits quick experiments and learning, such as a CBSE student typing Python commands into an interactive shell and seeing each result immediately.