helloword.c
#include "print.h" int main(void){ printHello(); return 0; }
print.c
#include "print.h" void printHello() { printf("hello word!\n"); }
print.h
#include "stdio.h" void printHello(void);
#include "print.h" int main(void){ printHello(); return 0; }
#include "print.h" void printHello() { printf("hello word!\n"); }
#include "stdio.h" void printHello(void);