Compiler vs Interpreter — Difference (with Table & FAQs)
Compiler vs Interpreter compared side by side — a 6-row comparison table, 4 key points and 3 exam FAQs. Class 11 Computer, free and no sign-up.
TL;DR: Compiler vs Interpreter compared side by side — a 6-row comparison table, 4 key points and 3 exam FAQs. Class 11 Computer, free and no sign-up.
Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated
The main difference between Compiler and Interpreter: A compiler translates entire source code to machine code before execution. An interpreter translates code line-by-line during execution.
Compiler vs Interpreter — Comparison Table
| Basis | Compiler | Interpreter |
|---|---|---|
| Translation | Entire code at once | Line by line |
| Execution | After complete translation | During translation |
| Speed | Faster execution | Slower execution |
| Memory | Requires separate executable file | No separate executable needed |
| Error Detection | All errors shown before execution | Errors shown during execution |
| Examples | C, C++, Java, C# | Python, JavaScript, Ruby |
Key Points
- Compilers produce machine-independent code
- Interpreters need source code each time
- Compiled code runs faster but takes longer to prepare
- Interpreted code is slower but easier to debug
Frequently Asked Questions
What is the main difference between a compiler and an interpreter?
A compiler translates the entire source program into machine code once, before the program runs, producing a separate executable file. An interpreter translates and executes the program one statement at a time, so no separate executable is produced.
Which is faster, a compiled or an interpreted program?
A compiled program usually runs faster, because translation has already been done before execution begins. An interpreter has to translate each statement every time it runs, which adds work while the program is running.
How do compilers and interpreters report errors differently?
A compiler checks the whole program first and reports all the errors it finds together, so nothing runs until they are fixed. An interpreter stops at the first error it meets, so earlier statements have already executed by then — which makes small programs easier to debug line by line.