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#include "iostream" 
 
using namespace std; 
 
template < class T> class stack 
{ 
    template <class T> struct item { item * prev; T data; }; 
public:   
    stack() { count=0;} 
    item<T> * it; 
    T toItem(T); 
    T outItem(); 
    T pop(); 
    T slow(); 
    int count; 
}; 
 
template <class T> T stack<T>::toItem(T elem) 
{ 
    item <T>* el= new item<T>; 
    if(count==0) {  el->data= elem; el->prev=0; it=el; count++; } 
    else { el->data= elem; el->prev=it; it=el; } 
    return 0; 
} 
 
template <class T> T stack <T>::outItem() 
{ 
    item<T> * el= new item<T>;  el=it;  cout << el->data << endl; 
    for(;el->prev!=0; el=el->prev) { cout << el->data << endl; } 
    return 0; 
} 
 
template<class T> T stack<T>::pop() { item<T> *l= it->prev; delete [] it; it=l; count--; return 0; } 
template<class T> T stack<T>::slow() 
{
    stack(); 
    for(int i=0; i<5; i++) { toItem(rand()%100);  } 
    outItem(); pop(); return 0; 
} 
 
int main() 
{
    stack<int> p; p.slow(); 
    return 0; 
}  

prog.cpp:7: error: declaration of ‘class T’
prog.cpp:5: error:  shadows template parm ‘class T’
prog.cpp: In member function ‘T stack<T>::slow()’:
prog.cpp:37: error: there are no arguments to ‘rand’ that depend on a template parameter, so a declaration of ‘rand’ must be available
prog.cpp:37: error: (if you use ‘-fpermissive’, G++ will accept your code, but allowing the use of an undeclared name is deprecated)
prog.cpp: In member function ‘T stack<T>::slow() [with T = int]’:
prog.cpp:43:   instantiated from here
prog.cpp:37: error: ‘rand’ was not declared in this scope

Standard output is empty