Making my own version of the scanf() version

Hi guys,

This is sort of two questions in one really XD.

I'm trying to make an OS using C. Which is a real challenge as I'm more of a C++ kinda guy, anyway.

How would I be able to create a scanf() type function? The reason I'm asking is because, as you may know, when making an OS you can't include system headers ( you know the #include < > ones ). Is there a way of doing this without the system headers?

And a second, less important question is, how would I be able to incorporate C++ into the C kernel? I.e. make a c++ function, and then call it from within the C main() function? ( If this can be answered then it could make my life easier with the scanf problem as I could use std::cin instead. ).

Thanks in advance.

Jamie.

Writing the C++ standard libraries is very likely much harder than writing the C standard libraries.

I suggest reading stuff in OSDev.org &bull; Index page forums.
http://wiki.osdev.org/Main_Page

Tim S.

Quote:

---

I'm trying to make an OS using C. Which is a real challenge as I'm more of a C++ kinda guy, anyway.

---

O_o

Quote:

---

How would I be able to create a scanf() type function?

---

O_o

Quote:

---

Is there a way of doing this without the system headers?

---

O_o

Quote:

---

If this can be answered then it could make my life easier with the scanf problem as I could use std::cin instead.

---

O_o

You have no business making a kernel.

You are so incredibly not ready for the task you've set yourself.

Pull your head from your ... and read a book on programming.

Soma

in the C++ file you declare your function 'extern "C" <function declaration>'. this tells the C++ compiler to use C linkage. then a C program can call it. it has to be a plain old function and it can't use any C++ features in the function declaration.

Quote:

---

Originally Posted by dmh2000

in the C++ file you declare your function 'extern "C" <function declaration>'. this tells the C++ compiler to use C linkage. then a C program can call it. it has to be a plain old function and it can't use any C++ features in the function declaration.

---

Link about this.
[32] How to mix C and C++ Updated! , C++ FAQ

Tim S.