Using C struct without including header file
- by shams
My basic problem is that I want to use some structs and functions defined in a header file by not including that header file in my code.
The header file is generated by a tool. Since I don't have access to the header file, I can't include it in my program.
Here's a simple example of my scenario:
first.h
#ifndef FIRST_H_GUARD
#define FIRST_H_GUARD
typedef struct ComplexS {
float real;
float imag;
} Complex;
Complex add(Complex a, Complex b);
// Other structs and functions
#endif
first.c
#include "first.h"
Complex add(Complex a, Complex b) {
Complex res;
res.real = a.real + b.real;
res.imag = a.imag + b.imag;
return res;
}
my_program.c
// I cannot/do not want to include the first.h header file here
// but I want to use the structs and functions from the first.h
#include <stdio.h>
int main() {
Complex a; a.real = 3; a.imag = 4;
Complex b; b.real = 6; b.imag = 2;
Complex c = add(a, b);
printf("Result (%4.2f, %4.2f)\n", c.real, c.imag);
return 0;
}
My intention is to build an executable for my_program and then use the linker to link up the executables. Is what I want to achieve possible in C?
