Visual Studio with C and Asm files

[Ron Weller]

I am currently going through a book. It has C programs that call Assembly routines. I would like to type in some of the programs to see them work.
The C programs are in .c files and the Assembly routines are in .asm files.
How do I create a project in Visual Studio that will compile and assemble and link these files into a program that I can run?

I have access to Visula Studio Versions: 6, 2005, 2010

Sample c file:

#include <stdio.h>

int first=1, second=2, third=0;		// these are the integers with
					// whch we want to work.
void main(void)
{

	printf("\nBefore adding third =%d",third);
	Add_Ext();				// this call the assembly
						// program that will add
						// externals.
	printf("\nAfter adding third = %d",third);

} // end main

Sample asm file:

.MODEL	MEDIUM			; This tells the procedure to use the
				; MEDIUM memory model.

EXTRN	first:WORD, second:WORD, third:WORD

.CODE				; This is the beginning of the code segment.

_Add_Ext PROC FAR		; The procedure is type FAR.
mov AX, first			; This moves the first number into the
				; accumulator.
add AX, second			; This adds the second number to the
				; accumulator.
mov third, AX			; This stores the result back into
				; third.

_Add_Ext ENDP			; The procedure ends here.

END				; This is the end of the code segment.

[2kaud]

For info for VS2017 see https://social.msdn.microsoft.com/Fo...orum=vcgeneral for info on how to configure VS to be able to use .asm files.

Also note that for 32 bit (not for 64 bit), you can do in-line assembler using __asm {}. See https://docs.microsoft.com/en-us/cpp...ler/inline/asm