Definition/body of the printf & scanf function in C

Question

Where do i find the definition/body of the printf/scanf & other similar predefined commonly used functions (getch, clrsr ...etc) of "Borland C" ?

Answer 1

You cannot.. You can just see the prototype of printf/scanf in the header file <stdio.h>

You can find it in the standard library which comes with whatever compiler you are using..

Answer 2

Probably you cannot see the source code of predefined functions like printf() and scanf() since they are already compiled file with extension of .lib the compiler just need the declaration of function and doesn't need exact source file they are link later by linker to produce .exe file.