## Inline ASM Calculator

Below is a basic Calculator i made using Inline ASM in C++. The functions include addition, subtraction, division and multiplication.

Code:
```/*
Basic Asm Calculator
Showing how to code some simple functions
in C++ using Inline Asm!

Just on the Asm Functions you do not need
to have the ';' at the end of each line
I have just come custom to it but it make no
great deal!
*/

#include <windows.h>
#include <iostream.h>

//Function Prototypes need to be declared the 'main'
//function however does not need to be declared
int Add(int x, int y);
int Sub(int x, int y);
int Div(int x, int y);
int Mul(int x, int y);

int main ()
{
int func;          //Function to use, see the switch statement
int x,y;           //x and y = number 1 and number 2 respectively :)
bool finish=false; //just a boolean so the program won't close ;)

while (finish==false) //loop begins so program won't exit when done :D
{
cout<<"1:Add, 2:Sub, 3:Div, 4:Mul\n";
cout<<"Please enter a number to represent the function\n";
cin>>func; //enter number representing the proper function
cout<<"Enter first number\n";
cin>>x; //enter first number
cout<<"Enter second number\n";
cin>>y; //enter second number

switch(func) //remeber func is an integer type
{
case 1:
cout<<Add(x,y)<<endl; //if func = 1 then Add x and y
break;
case 2:
cout<<Sub(x,y)<<endl; //if func = 2 then subtract x and y
break;
case 3:
cout<<Div(x,y)<<endl; //if func = 3 then divide x and y
break;
case 4:
cout<<Mul(x,y)<<endl; //if func = 4 then multiply x and y
break;
}
}
return 0;
}

int Add(int x, int y)
{
__asm
{
mov eax,x;
mov ebx,y;
mov x,eax;
}
return x;
}

int Sub(int x, int y)
{
__asm
{
mov eax,x;
mov ebx,y;
sub eax,ebx;
mov x,eax;
}
return x;
}

int Div(int x, int y)
{
__asm
{
mov eax,x;
mov ecx,y;
sub edx,edx;
div ecx;
mov x,eax;
}
return x;
}

int Mul(int x, int y)
{
__asm
{
mov eax,x;
mov ebx,y;
mul ebx;
mov x,eax;
}
return x;
}```
Hope it helps a little