What are the function of compiler and an interpreter?

Answer 1

Interpreters translate source code into machine while it is executing. The machine code is not saved, thus the code must be translated on every execution. As a result, the code is larger and very much slower than an equivalent machine code executable would be. However, the source code is highly portable.

Compilers translate the whole program at once to produce a machine code executable that requires no further translation. However, the machine code is non-portable and must be recompiled for each supported platform.

Some language compile to byte code rather than machine code. Byte code is best thought of as being the native language of a virtual machine rather than a physical one. The virtual machine then interprets the byte code to produce the machine code. Like all interpreted languages, the byte code is highly portable, and while quicker to interpret than source code, is still very much larger and slower than compiled native machine code.

Answer 2

A compiler is a computer program (or set of programs) that transforms source code written in a computer language (the source language) into another computer language (the target language, often having a binary form known as object code). The most common reason for wanting to transform source code is to create an executable program.

The name "compiler" is primarily used for programs that translate source code from a high-level programming language to a lower level language (e.g., assembly language or machine code). A program that translates from a low level language to a higher level one is a decompiler. A program that translates between high-level languages is usually called a language translator, source to source translator, or language converter. A language rewriter is usually a program that translates the form of expressions without a change of language.

A compiler is likely to perform many or all of the following operations: lexical analysis, preprocessing, parsing, semantic analysis, code generation, and code optimization.

Program faults caused by incorrect compiler behavior can be very difficult to track down and work around and compiler implementors invest a lot of time ensuring the correctness of their software.

The term compiler-compiler is sometimes used to refer to a parser generator, a tool often used to help create the lexer and parser.he term compiler-compiler is sometimes used to refer to a parser generator, a tool often used to help create the lexe

Answer 3

Technically, Java isn't usually compiled. It usually runs on a VM (virtual machine), which interprets the code at run-time. This is why Java is usually slower than "real" compiled languages, such as C, C++, etc. However, in some cases, Java code is compiled to "byte code", and then executed, which speeds up execution dramatically.

Answer 4

Compiler and interpreter are system softwares which convert your code into machine language.

Compiler converts the code of the complete source file at once whereas interpreter does the same job line by line.

Answer 5

It has been my experience that executable code that has been generated by a compiler is much faster.

Answer 6

A compiler is a programme which converts the language in which u write the programme to machine language.