A Simple Method for Calling C functions in assembly language

A Simple Method for Calling C functions in assembly language

First, I chose the compiler: VC ++ and MASM for this experiment.
Create a c file and write down the following content.
Int CADD (int A, int B)
{
Return A + B;
}
Use VC ++ to compile it into an OBJ file.
Then create an ASMProgram, Add the obtained OBJ file, and write down the following content.

. 386
. Model flat, stdcall
Option Casemap: None

Include windows. inc
Include user32.inc
Includelib user32.lib
Include kernel32.inc
Includelib kernel32.lib

CADD proto C: DWORD,: DWORD; declare external function CADD

. Code
Start:
Invoke CADD, 1, 2
Invoke exitprocess, null
End start

Compile and run the program successfully.
You can also use this method to call functions in other languages.