Homework Solution 2: stack.cc

// Pop a value off of the stack by deleting the element on the

// front of the list, and returning its value

int stack::pop()

{

item *top;

int top_value;

if (data_list == NULL)

cerr << "stack underflow!\n";

else {

top = data_list;

data_list = data_list->next;

top_value = top->data;

delete top;

return top_value;

}

}

Note: exceptions are a better way to report errors. We’ll learn about them if we have time tomorrow.

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