[c] 'readline/readline.h' file not found

I have included:

#include "stdio.h"    
#include <readline/readline.h>
#include <readline/history.h>

and my compiler includes the flag

-lreadline

but I am still receiving the error message:

fatal error: 'readline/readline.h' file not found

I am trying to use the function, readline();

Defined in more detail here: http://linux.die.net/man/3/readline

This command helped me on linux mint when i had exact same problem

gcc filename.c -L/usr/include -lreadline -o filename

You could use alias if you compile it many times Forexample:

alias compilefilename='gcc filename.c -L/usr/include -lreadline -o filename'