Распространенные ошибки - C++ - Ответ 6661853

void foo_create( int * Arr ) {
    Arr = new int [10];
    for ( int i = 0; i < 10; i++ ) Arr[i] = i;
}
 
void foo_delete( int * Arr ) {
    delete [] Arr;
    Arr = NULL;
}
 
int main() {
    int * Ptr;
    foo_create( Ptr );
    for ( int i = 0; i < 10; i++ ) cout << Ptr[i] << "  ";
    foo_delete( Ptr );
    return 0;
}

#include <iostream>
void foo_create( int ** ptr_to_ptr )
{
    *ptr_to_ptr = new int [10];
    for ( int i = 0; i < 10; i++ ) (*ptr_to_ptr)[i] = i;
}
 
void foo_delete( int ** ptr_to_ptr )
{
    delete [] *ptr_to_ptr;
    *ptr_to_ptr = nullptr;
}
 
int main()
{
    int * Ptr;
    foo_create( &Ptr );
    for ( int i = 0; i < 10; i++ ) std::cout << Ptr[i] << "  ";
    foo_delete( &Ptr );
    std::cout  << Ptr <<  std::endl;
}

#include <iostream>
 
void foo_create( int * & Arr )
{
    Arr = new int [10];
    for ( int i = 0; i < 10; i++ ) Arr[i] = i;
}
 
void foo_delete( int * & Arr )
{
    delete [] Arr;
    Arr = nullptr;
}
 
int main()
{
    int * Ptr;
    foo_create( Ptr );
    for ( int i = 0; i < 10; i++ ) std::cout << Ptr[i] << "  ";
    std::cout <<  std::endl;
    foo_delete( Ptr );
    std::cout <<  Ptr << std::endl;
}