Why put void in params?

Question

What\'s the reason for putting void inside of the params?

Why not just leave it blank?

void createLevel(void);

void createLevel();

Answer 1

In C++ there is no difference.

The following applies only to C:

Actually, according to this thread:

when you declare somewhere a function func(), this means you don't say anything about it's aguments. On the otherhand func(void) means NO ARGUMENTS

perfect_circle even posted a wonderful code example to illustrate the point:

skalkoto@darkstar:~$ cat code.c
#include 

int main()
{
        void func(void);
        func(3);
return 0;
}

void func(int a)
{
        printf("Nothing\n");
}
skalkoto@darkstar:~$ gcc code.c
code.c: In function `main':
code.c:6: error: too many arguments to function `func'
skalkoto@darkstar:~$ cat code1.c
#include 

int main()
{
        void func();
        func(3);
        return 0;
}

void func(int a)
{
        printf("Nothing\n");
}
skalkoto@darkstar:~$ gcc code1.c
skalkoto@darkstar:~$ ./a.out
Nothing
skalkoto@darkstar:~$