Question

Write the header file true.h for the source code file true.c such that Tread, Nice and GetStatus and Math can be used in other source code files by including foo.h. This only requires a few lines of C code at most.

uint16_t Nice;

const uint32_t Tread = 7;

int8_t GetStatus() {

return (IO_STUFF -> STATUS);

}

uint32_t Math (uint32_t N) {

if (N< 2) return (N);

else return (Math(N-1) + Math(N-2));

Answer 1

Hi,

If you want to make some variables and functions common for all. Then you use a "header file"

you can use the following approach :-

prepare 2 files :

1. header file

2. c file that uses this header file

myheader.h

#include <stdint.h> // Include stdint.h in the header file since we are using uint typedefs // variable Nice of type uint16_t uint16_t Nice; // function square that takes a uint16_t and returns a uint32_t uint32_t square(uint16_t num){ return num*num; } // recursive function fib that is used to get the fibonacci number at Nth position uint32_t fib (uint32_t N) { if (N< 2) return (N); else return (fib(N-1) + fib(N-2)); }

and

main.c

#include <stdio.h> #include "myheader.h" // include your header file int main () { // use the functions and variables of the header file directly printf("%d", square(5)); printf("\n%d", Nice); printf("\n%d", fib(4)); printf("\n%d %d %d %d", fib(0), fib(1), fib(2), fib(3)); return 0; }

I hope I answered your question. If you need more information , feel free to comment below.

Thanks !