/*
File: hello.c
Description: Prints a greeting to stdout.
Author: Douglas
C. Schmidt <schmidt@uci.edu>
*/
#include
<stdio.h>
int
main (void) /* execution starts in main
*/
{
printf ("Hello world.\n");
return 0;
}
|
All C programs must have a function in it
called main
Execution starts in function main
C is case
sensitive!
Comments start with /* and end with */. Comments may span over many lines.
C is a “free format” language.
The #include
<stdio.h> statement instructs the C
compiler to insert the entire contents of file stdio.h in its place and compile the
resulting file.
