I was
> shocked to
> see that the programs could actually be compiled through
> gcc without
> any errors.
gcc a.c
a.c: In function `main':
a.c:5: error: syntax error before '*' token
a.c:6: error: `s1' undeclared (first use in this function)
a.c:6: error: (Each undeclared identifier is reported only once
a.c:6: error: for each function it appears in.)
a.c:6: error: `s2' undeclared (first use in this function)
$cat a.c
#include <stdio.h>
main()
{
char far *s1,*s2;
printf("%d %d",sizeof(s1),sizeof(s2));
}
http://avsharath.googlepages.com/TestYourCSkillsErrata.htm
Erratum:
1. size of pointer type can vary from implementation to implementation.
2. far is not a standard keyword/type qualifier.
3. sizeof doesn't return integer, it returns a value of type size_t. So using
%d will cause undefined behaviour. [This mistake repeats in all the code
snippets in the book where sizeof value is printed].
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