Is it possible to directly work with BIOS interrupts using C?

Question

C++ / C#

Here is a code that runs on bare metal. Displays the line "hello world" on the screen and reboots the computer. Is it possible to implement something similar in pure C?

#make_boot#

org 7c00h

mov ah,00h
mov al,03h
int 10h 

mov ah,13h
mov al,1
mov bh,0
mov bl,0000_1011b
mov dl,1
mov dh,0
mov cx,message - offset text
mov bp,offset text
int 10h

INT 19h
text db 'Hello world!'
message:

Answer 1

Yes, it's possible.

Answer 2

No, you can't use BIOS interrupts. Compilers compile 32 bit code. Execution of such code is possible only in protected mode. And BIOS interrupts are only in real mode.