We know that a project delivers the output as exe files. I mean, there are other forms also like dll, ocx etc., but here in this write-up I will discuss about the exe. The EXE stands for executable and that means the operating system with the help of the processor executes the instruction specified in the Exe file. This exe is a binary file and it also has information required by the Operating system in the file header. In the meantime its majority of the content is for the Processor of the machine that runs it.

The header of the exe file contains information required for the operating system. OS knows how much memory to allocate in the data segment and how much code segment memory is required to load the instruction set packed inside the executable from this header. Well. As already told in the blogs, data segment is responsible for the entire program scoped constants, global variables etc. Whereas code segment is responsible for holding the instruction set that a Processor understands. We call this header as Process control Block. You can do a web search to know more about it.

Next to the process control block is the actual exe contents, which is nothing but the instruction set and its data processing in the form of microprocessor's opcode format. We call this assembly language and that mean it is not that opening an exe file in word processor will reveal the assembly code for you.