我在下面有一些代码。这段代码是一个基本的push / pop堆栈类,我创建了它作为模板,使某人能够推送/弹出堆栈。我有一个家庭作业,我现在要做的是创建一个具有多个值的堆栈。
所以我希望能够创建一个基本上可以发送三个整数的堆栈,我也可以在这里推送/弹出这些堆栈。我正在寻找的是关于这应该如何运作的理论,我并不想让别人为我做功课。
情景是我们正在处理零件。因此用户将输入序列号(int),制造日期(int)和lotnum(int)。所以我的问题是:
我应该尝试使用像类或其他类似的结构创建一个新类吗?
/****************************************************************************
Inventory class.
Chad Peppers
This class creates a object for stacking nodes
In addition, there should be member functions to perform the following
operations:
- Push to the stack
- Pop to the stack
- Function to check if empty
****************************************************************************/
// Specification file for the DynIntStack class
template <class T>
class Inventory
{
private:
// Structure for stack nodes
struct StackNode
{
T value; // Value in the node
StackNode *next; // Pointer to the next node
};
StackNode *top; // Pointer to the stack top
public:
// Constructor
Inventory()
{ top = NULL; }
// Destructor
~Inventory();
// Stack operations
void push(T);
void pop(T &);
bool isEmpty();
};
/*************************************************************************
Basic class constructor.
Input Parameters: Information to build the stack
Return Type: void
*************************************************************************/
template<class T>
Inventory<T>::~Inventory()
{
StackNode *nodePtr, *nextNode;
// Position nodePtr at the top of the stack.
nodePtr = top;
// Traverse the list deleting each node.
while (nodePtr != NULL)
{
nextNode = nodePtr->next;
delete nodePtr;
nodePtr = nextNode;
}
}
/*************************************************************************
Function to push an item in the stack
Input Parameters: T
Return Type: void
*************************************************************************/
template<class T>
void Inventory<T>::push(T num)
{
StackNode *newNode; // Pointer to a new node
// Allocate a new node and store num there.
newNode = new StackNode;
newNode->value = num;
// If there are no nodes in the list
// make newNode the first node.
if (isEmpty())
{
top = newNode;
newNode->next = NULL;
}
else // Otherwise, insert NewNode before top.
{
newNode->next = top;
top = newNode;
}
}
/*************************************************************************
Function to pop an item in the stack
Input Parameters: T
Return Type: void
*************************************************************************/
template<class T>
void Inventory<T>::pop(T &num)
{
StackNode *temp; // Temporary pointer
// First make sure the stack isn't empty.
if (isEmpty())
{
cout << "The stack is empty.\n";
}
else // pop value off top of stack
{
num = top->value;
temp = top->next;
delete top;
top = temp;
}
}
/*************************************************************************
Basic class deconstructor.
Input Parameters: None
Return Type: void
*************************************************************************/
template<class T>
bool Inventory<T>::isEmpty()
{
bool status;
if (!top)
status = true;
else
status = false;
return status;
}
答案 0 :(得分:5)
你可以创建一个结构,它是3个int值的聚合,然后在这些行上为该结构实例化模板Inventory
#include "Inventory.h"
//create an aggregate structure
struct ProductData {
int serial_num;
int manufacture_date;
int lot_num;
}
//instantiate Inventory for ProductData
Inventory<ProductData> stack;