rexim

#include <stdio.h>
#include <stdlib.h>

#define da_append(xs, x)                                                             \
    do {                                                                             \
        if ((xs)->count >= (xs)->capacity) {                                         \
            if ((xs)->capacity == 0) (xs)->capacity = 256;                           \
            else (xs)->capacity *= 2;                                                \
            (xs)->items = realloc((xs)->items, (xs)->capacity*sizeof(*(xs)->items)); \
        }                                                                            \

jakelevi1996

Multiple source files in C

This Gist presents an introduction to a few different ways of working with multiple source files in C, including:

1. Simple .c source files and .h header files compiled into a .exe
2. First compiling into .o object files, and then linking together
3. Makefiles
4. Statically linked libraries
5. Dynamically linked libraries

The concepts are demonstrated using gcc (tdm64-1) 5.1.0 on Windows 8.1, using 3 C source files (linkedlist.c, listprimes.c and main.c) and 2 header files (linkedlist.h and listprimes.h), all of which are included at the end. It is assumed that all the source files are saved in a single directory, and any terminal commands are entered in a terminal window open in that same directory.