Operator[] for pointer-to-function

#include <iostream>
 
int foo() { return 1; }
int main()
{
    int(*p)() = foo;
    std::cout << p[0]();
}

std::cout << (*(p+0))();

#include <iostream>
 
int foo() { return 1; }
int main()
{
    int(*p)() = foo;
    std::cout <<        p      ();
    std::cout <<       (p+0)   ();
    std::cout <<     (*(p+0))  ();
    std::cout <<   (*(*(p+0))) ();
    std::cout << (*(*(*(p+0))))();
    std::cout <<p[0][0][0]();
}

#include <cassert>
int main()
{
    int v = 33;
    int* p = &v;
    int& r = p[0];     // lvalue
    assert(r == 33);
}

    int(*p)() =  foo ;
    std::cout << p();

    int(*p[])() = { foo };
    std::cout << p[0]();

int *ptr;
bool trushka = ptr[1]==ptr+1 ;// true

#include <iostream>
using namespace std;
    int foo(){ cout<<"foo!\n";}
    int main()
    {
    int (*pf)()=foo;
    pf[0]();//mingw ест)
    cout<<sizeof(*pf)<<endl;
    cout<< pf <<' '<<(pf+1)<<' '<<foo<<endl;//1 1 1
    return 0;
}

#include <iostream>
 
void foo() {}
 
int main() 
{
  std::cout << &foo << " " << &foo + 1 << std::endl;
  std::cout << (void *) &foo << " " << (void *) (&foo + 1) << std::endl;
}

#include <iostream>
using namespace std;
    int foo(){ cout<<"foo!\n";}
    int main()
    {
    int (*pf)()=foo;
    pf[0]();//mingw ест)
    cout<<sizeof(*pf)<<endl;
    cout<<(void*)pf <<' '<<(void*)(pf+1) <<endl;//разница в  1
    cout<<(void*)&pf <<' '<<(void*)(&pf+1) <<endl;//разница в  4     
    return 0;
}

#include <iostream>
 
void foo() {}
 
int main() 
{
  std::cout << &foo << " " << &foo + 1 << std::endl;
  std::cout << (void *) foo << " " << (void *) (foo + 1) << std::endl;
  std::cout << (void *) &foo << " " << (void *) (&foo + 1) << std::endl;
}