C code - 4 lines

Link:

C, pasted on Nov 25:

void STACKinit2(int);
 int STACKempty2(void);
void STACKpush2(Item2);
Item2 STACKpop2(void);

Output:

1 2	Line 3: warning: parameter names (without types) in function declaration Line 4: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'STACKpop2'