What is the process of converting source program into target program in C language?

The process of converting source program into target program in C language Generally speaking, it is the process of compilation .

The compilation process of C language has four steps:

1. Preprocessing: aggregate the source programs (.c files) stored in different files, and process the macros in the language Replacements, such as the preprocessing directive #include, tell the compiler to open the included file, leaving its program with other programs. Generate .i files.

2. Compilation: Preprocessing source program (.i file) into assembler (.s file)

3. Assembly (assember): Convert assembler into relocatable ( relocatable: It means that the address of the code segment and data in the file has not yet been finalized) machine code. This step generates the target file (.obj or .o file).

4. Linker/loader: Linking is to connect the target file with other program modules (if any) that are compiled and generated separately and the standard library functions provided by the system to generate The process of creating a runnable executable file locates each code and data in the appropriate location in the memory during loading. This step generates the final executable file.

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