![]() Lexical analyzer divides the program into “tokens”, the Syntax analyzer recognizes “sentences” in the program using the syntax of the language and the Semantic analyzer checks the static semantics of each construct. Each of them takes input from the output of the previous level and works in a coordinated way.Īnalysis Phase: An intermediate representation is created from the given source code : There are two major phases of compilation, which in turn have many parts. Then loader loads it in memory and executes it. Linker loads a variety of object files into a single file to make it executable. Loader/Linker: It converts the relocatable code into absolute code and tries to run the program resulting in a running program or an error message (or sometimes both can happen).The address within the program will be in such a way that it will cooperate with the program movement. Relocatable Machine Code: It can be loaded at any point and can be run.Interpreted programs are usually slower with respect to compiled ones. A compiler scans the entire program and translates it as a whole into machine code whereas an interpreter translates the program one statement at a time. The Compiler in one go reads the inputs, does the processing, and executes the source code whereas the interpreter does the same line by line. But they are different in the way they read the input. Interpreter: An interpreter converts high-level language into low-level machine language, just like a compiler.Its translates assembly language to machine code. The output of the assembler is called an object file. They are not universal since for each platform we have one. Assembler: For every platform (Hardware + OS) we will have an assembler.It is an intermediate state that is a combination of machine instructions and some other useful data needed for execution. Assembly Language: It’s neither in binary form nor high level.It performs file inclusion, augmentation, macro-processing, etc. Pre-Processor: The pre-processor removes all the #include directives by including the files called file inclusion and all the #define directives using macro expansion.They direct the pre-processor about what to do. These (#) tags are called preprocessor directives. ![]() They are closer to humans but far from machines.
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