c - Attribution in first line on switch statement make a error in gcc -

why code doesn't work unless remove comment?

#include <stdio.h>  int main(){     int num = 5;     switch(num){         case 5:             //printf("");             int = 1;             printf("%d", num+another);             break;     } } 

gcc returns error:

prog.c: in function ‘main’: prog.c:7:13: error: label can part of statement , declaration not statement 

thanks.

the reason outlined here: why can't variables declared in switch statement?

as workaround, can this:

#include <stdio.h>  int main(){     int num = 5;     switch(num){         case 5:;             //printf("");             int = 1;             printf("%d", num+another);             break;     } } 

include semicolon after case workaround.fool compiler thinking statement follows , not declaration. taken here