Compiler and interpreter operation

Marking points

1. 1 For more than 3 marks, describes both a compiler and an interpreter.
2. 2 Whole-program translation is a credited compiler point.
3. 3 A standalone compiled program is a credited compiler point.
4. 4 A list of syntax errors after compilation is credited.
5. 5 Creating executable/object/machine code without executing source is credited.
6. 6 Line-at-a-time translation/execution is a credited interpreter point.
7. 7 Requiring the interpreter is credited.
8. 8 Requiring source each run/no separate executable is credited.
9. 9 Stopping at the first syntax error is credited.
10. 10 Executing code as it is translated is credited.

Full-mark answer

A compiler translates the whole source program in one go and creates executable machine/object code; it reports syntax errors after compilation, and the executable can then run without the compiler or source code. An interpreter translates and executes one line at a time, stops when it reaches a syntax error, and requires the source code and interpreter each time because it does not create a separate executable.