.Objfile and .exe File

EXE is an executable binary file, and obj is a target file, which can be understood as follows. the CPP source program is compiled to generate a binary file that can be understood and executed by the machine. This file is OBJ, but it is incomplete. It must be connected to the CPP standard library and other users' own libraries through the linker, multiple OBJ files generate an EXE. So we can regard OBJ as a part of the EXE (but it is very complicated to link the OBJ file)

The main workflow of a modern compiler is as follows: source code → Preprocessor → compiler → assembler → object code) → connector (linker, linker) → executable program (executables)