#include <iostream>

using namespace std;

// TU/global/file Scope(s)/ or hidden_var!

extern int tu_extern_scope;

extern int tu_extern_init_scope{0}; // definition is not extern anymore

int tu_scope; // inited to 0

const int tu_const_scope = 0;

static int tu_static_scope; // inited to 0

int g(int i){

cout << "START g():" << endl;

tu_extern_scope;

static int qq_block_stm_scope_static{200};

cout << "g:Hello World:" << ++qq_block_stm_scope_static << "," << i << endl;

for ( static int h=2, k=4; h<10; ++h, ++tu_scope) // TODO??: what is formal name for the scope of h?

{ // block-statement scope

int temp{};

static int ff_block_stm_scope_static{300};

cout << "g_for:Hello World:" << h <<"," << ++ff_block_stm_scope_static << "," << k << "," << temp << endl;

}

cout << "END g():" << endl;

return 0;

}

int main()

{ // block scope

for ( static int f=2, j=4; f<10; ++f, ++tu_scope)

{ // block-statement scope

int temp {10};

cout << "Hello World:" << f <<"," << "," << j << "," << temp << endl;

g(42);

}

cout << "###" << endl;

return 0;

}