What is a compiler What is compilation?

It is to convert ** into executable commands of the system.

Compilation (compilation, compile) 1. The process of using a compiler to generate an object program from a source program written in a source language. 2. Use the compiler to generate the action of the target program. Compilation is to turn a high-level language into a binary language that the computer can recognize, the computer only knows 1s and 0s, and the compiler changes the familiar language to the binary language.

The compiler's process of translating a source program into a target program is divided into five stages: lexical analysis; grammatical analysis; semantic checking and intermediate generation; **Optimize; Target generation. It is mainly used for lexical analysis and grammatical analysis, also known as source program analysis, in which grammatical errors are found in the analysis process and prompt information is given.

A compiled language is a programming language that is implemented with a compiler. It is not like a literal translation language, where the interpreter runs ** sentence by sentence, but with a compiler, ** is compiled into machine code first, and then it is run. Theoretically, any programming language can be compiled, or literally translated.

The difference between them is only related to the application of the program.

Compilation is to knock on the source of others and compile it into something you can use.

It's just a matter of compiling a book and re-translating it!

A compiler, also known as a compiler, is a translation program that translates a source program written in a high-level programming language into an equivalent machine language format target program.

An interpreter is a language processing program that works in much the same way as a compiler in terms of lexical, syntax, and semantic analysis, but when running a user program, it directly executes the source program or the internal form of the source program (intermediate**).

A translation program that translates a source program written in a high-level programming language into an equivalent target program written in computer assembly language or machine language. A compiler is a translation program that is implemented using a generative implementation approach. It takes a source program written in a high-level programming language as input, and a target program represented in assembly language or machine language as output.

The compiled target program usually goes through a running phase in order to run with the support of the runner, process the initial data, and calculate the required calculation results. The implementation algorithm of the compiler is more complex. This is because the sentence it translates does not have a one-to-one correspondence with the instructions of the target language, but a many-to-one correspondence; It's also because it handles recursive calls, dynamic storage allocation, multiple data types, and tight dependencies between statements.

However, due to the characteristics of high-level programming language writing such as easy to read, easy to port, and strong expression ability, compilers are widely used to translate source programs written in high-level languages with large scale, high complexity, and high efficiency.