challenge-addition.c

#include <stdio.h>

int add(int num1,int num2)
{
	__asm {
		mov eax, num1
		add eax, num2
	}
}

int main()
{
    int num1 = 10;
    int num2 = 5;
    int result = add(num1, num2);
    printf("Result: %d", result);
    return 1;
}

For multiplication:

int multiply(int num1, int num2)
{
	__asm {
		mov ebx, 1
		mov eax, num1
		domultiply:
		cmp ebx, num2
		je exit
		add eax, num1
		inc ebx
		jmp domultiply
		exit:
	}
}