Пример из книги выдает ошибки

// exceed.cpp -
#include <iostream>                    // 
#define ZERO 0                        
#include <climits>                     //
int main ()                            //  //
{
    using namespace std;                 //  
    short sam = SHRT_ MAX;               //  
    unsignet short sue = sam;            //  
           
    cout << "  Sam has " << sam << " dollars and Sue has " << sue;
    cout << " dollar depozit. " << endl
         << " Add $1 to each account." << endl << "Now";
    sam = sam + 1;
    sue = sue + 1;
    cout << " Sam has " << sam << " dollars and Sue has " << sue;
    cout << " Áåäíûé Ñýì. dollras deposited.\nPoor Sam!" << endl; 
    sam = ZERO;
    sue = ZERO;
    cout << " Sam has " << sam << " dollars and Sue has " << sue;
    cout << " dollar depozit. " << endl << " Lucky Sue !" << endl;
    cout << " Take $1 from each account. " << endl << "Now ";
    sam = sam - 1;
    sue = sue - 1;
    cout << " Sam has " << sam << " dollars and Sue has " << sue;
    cout << " dollar depozit. " << endl << " Lucky Sue !" << endl;
    return 0;
}

#include <iostream>                    // äèðåêòèâà ïðîöåññà         
#define ZERO 0                         // ñîçäàåò ñèìâîë ZERO äëÿ çíà÷åíèÿ 0
#include <climits>                     // îïðåäåëÿåò INT_MAX êàê íàèáîëüøåå çíà÷åíòå int
int main ()                            //  // çàãîëîâîê ôóíêöèè
{
    using namespace std;                 //  äåëàåò âèäèìûì îïðåäåëåíèå
    short sam=SHRT_MAX;               //  èíèöèëèçèðóåò ïåðåìåííóþ ìàêñèìàëüíûì çíà÷åíèåì
    unsigned short sue = sam;            //  íîðìàëüíî, ïîñêîëüêó ïåðåìåííàÿ cam óæå îïðåäåëåíà
           
    cout << "  Sam has " << sam << " dollars and Sue has " << sue;
    cout << " dollar depozit. " << endl
         << " Add $1 to each account." << endl << "Now";
    sam = sam + 1;
    sue = sue + 1;
    cout << " Sam has " << sam << " dollars and Sue has " << sue;
    cout << " Áåäíûé Ñýì. dollras deposited.\nPoor Sam!" << endl; 
    sam = ZERO;
    sue = ZERO;
    cout << " Sam has " << sam << " dollars and Sue has " << sue;
    cout << " dollar depozit. " << endl << " Lucky Sue !" << endl;
    cout << " Take $1 from each account. " << endl << "Now ";
    sam = sam - 1;
    sue = sue - 1;
    cout << " Sam has " << sam << " dollars and Sue has " << sue;
    cout << " dollar depozit. " << endl << " Lucky Sue !" << endl;
    return 0;
}

#include <iostream>                    // директива процесса         
#define ZERO 0                         // создает символ ZERO для значения 0
#include <climits>                     // определяет INT_MAX как наибольшее значенте int
int main ()                            //  // заголовок функции
{
    using namespace std;                 //  делает видимым определение
    short sam=SHRT_MAX;               //  иницилизирует переменную максимальным значением
    unsigned short sue = sam;            //  нормально, поскольку переменная cam уже определена
           
    cout << "  Sam has " << sam << " dollars and Sue has " << sue;
    cout << " dollar depozit. " << endl
         << " Add $1 to each account." << endl << "Now";
    sam = sam + 1;
    sue = sue + 1;
    cout << " Sam has " << sam << " dollars and Sue has " << sue;
    cout << " Бедный Сэм. dollras deposited.\nPoor Sam!" << endl; 
    sam = ZERO;
    sue = ZERO;
    cout << " Sam has " << sam << " dollars and Sue has " << sue;
    cout << " dollar depozit. " << endl << " Lucky Sue !" << endl;
    cout << " Take $1 from each account. " << endl << "Now ";
    sam = sam - 1;
    sue = sue - 1;
    cout << " Sam has " << sam << " dollars and Sue has " << sue;
    cout << " dollar depozit. " << endl << " Lucky Sue !" << endl;
    return 0;
}

int main () {
    return 2 + 3;
}

int main () {
    return 2 + 3;
}

int main()
{
   int x=2+3;
   std::cout<<x;
   std::cin.get();
   return 0;   
}

int main()
{
   int x=2+3;
   std::cout<<x;
   std::cin.get();
   return 0;   
}

#include <iostream>