What qualities are important in a compiler?

QUALITIES OF A COMPILER ..

• Correctness (does it preserve meaning -not as easy as it sounds but it is very important!)
• Compiles quickly (complexity of compiling program O(n log n) remember bootstrapping!)
• Separate compilation (relocatable code, linking)

What does the compiler do?

compiler, computer software that translates (compiles) source code written in a high-level language (e.g., C++) into a set of machine-language instructions that can be understood by a digital computer’s CPU. Compilers are very large programs, with error-checking and other abilities.

What is the need of compilation?

Because computer can’t understand the source code directly. It will understand only object level code. Source codes are human readable format but the system cannot understand it. So, the compiler is intermediate between human readable format and machine-readable format.

What is the importance of a parser in compiler?

The parser or syntactic analyzer obtains a string of tokens from the lexical analyzer and verifies that the string can be generated by the grammar for the source language. It reports any syntax errors in the program. It also recovers from commonly occurring errors so that it can continue processing its input.

Why do we prefer compiler over interpreter?

Compiled languages are converted directly into machine code that the processor can execute. As a result, they tend to be faster and more efficient to execute than interpreted languages. They also give the developer more control over hardware aspects, like memory management and CPU usage.

What are the advantages of using a compiler?

Compilers have several advantages:

• Compiled programs run quickly, since they have already been translated.
• A compiled program can be supplied as an executable file. An executable file is a file that is ready to run.
• Compilers optimise code. Optimised code can run quicker and take up less memory space.