Hello all, I have just tried to compile a simple "Hello World" program in C, but it failed to do so. source code: #include <stdio.h> int main() { printk("Hello World!\n"); getchar(); return 0; } error message: ------@--------------:~/Programs/C$ gcc hello.c hello.c:1:20: error: stdio.h: No such file or directory hello.c: In function ‘main’: hello.c:5: warning: incompatible implicit declaration of built-in function ‘printf’ I then changed 'printf' to 'printk' in the source code and got this error message only: ------@--------------:~/Programs/C$ gcc hello.c hello.c:1:20: error: stdio.h: No such file or directory I'm using a fresh install of Ubuntu Edgy Eft (6.10), and it has gcc 4.1 installed. -chris