dick@tjalk.UUCP (Dick Grune) (03/21/84)
Now that I'm posting to the net anyway, I might just as well unleash
to the world the following C program that I have kept carefully caged
in a highly protected directory until now.
It is totally amoral and only serves for your education, edification,
enjoyment and/or annoyment. (It compiles and runs on our VAX 4.1 BSD)
Dick Grune
Vrije Universiteit
Amsterdam
And my name isn't Richard!
/* Escaped from the Language Lab */
#define STDIO_H <stdio.h>
#include STDIO_H /* logical, but ... */
/* some weird (external) declarations */
;
var;
int;
/* weird order */
char static cc;
/* reserved word entry */
int entry;
int entry; /* may be declared twice */
int ii[][/* 15, */ 2] = /* comma in index not allowed, however see below */
/* commas in initializer_lists at all levels */
{ {041, 042, },
{043, 044, },
};
/* extern function_body */
extern int
main(u, v) /* some crazy decls */ char *v[100]; int; {
/* funny order */
char register qq;
/* weird initializer */
int a, b = a = 3, d = 5; /* are declarations done left-to-right ? */
/* sum of string and int */
char *p = "abcde" + 2;
printf("a = %d (3), b = %d (3)\n", a, b);
printf("*p = %c (c)\n", *p);
/* assignments inside conditional expression */
printf("cond = %d (4)\n", a > 1 ? b = 4 : (d = 2));
/* just d = 2 is wrong */
printf("b = %d (4), d = %d (5)\n", b, d);
/* strange parsing */
qq = b---a; /* b-- - a */
printf("qq = %d (1), a = %d (3), b = %d (3)\n", qq, a, b);
/* comma in index */
qq = ii[5, 1][7, 0]; /* just an expression, RM 7.15 */
printf("qq = %o (43)\n", qq);
/* space in assignment operator */
d + /* space */ = 3;
printf("d = %d (8)\n", d);
/* sizeof sizeof */
printf("sizeof sizeof d = %d (%d)\n", sizeof sizeof d, sizeof (int));
/* non-obvious cast */
{ typedef int c;
printf("(c) - (a+b) = %d (-6)\n", (c) - (a+b));
}
/* legal (?) multiple declaration */
{ int j = a + 3; /* the `a' from `main' */
char a = 22; /* a new `a' */
printf("j = %d (6), a = %d (22)\n", j, a);
}
return 0;
}