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Data Structure
Question
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Write the definition of a member function ADDMEM() for a class QUEUE in C++, to add a MEMBER in a dynamically allocated Queue of Members considering the following code is already written as a part of the program.

struct Member
{
	int MNO;
	char MNAME[20];
	Member *Next; 
};
class QUEUE
{
	Member *Rear,*Front;
public:
	QUEUE(){Rear=NULL;Front=NULL;}
	void ADDMEM();
	void REMOVEMEM();
	~QUEUE();
};

Answer

void QUEUE::ADDMEM()
{
	Member *T;
	T=new Member;
	cin>>T->MNO;
	gets(T->MNAME);
	T->Next=NULL;
	if (Rear==NULL)
	{
		Rear=T;Front=T;
	}
	else
	{
		Rear->Next=T;
		Rear=T;
	}
}

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Some More Questions From Data Structure Chapter

Write the definition of a member function Pop() in C++, to delete a book from a dynamic stack of TEXTBOOKS considering the following code is already included in the program.

struct TEXTBOOKS
{
	char ISBN[20]; char TITLE[80];
	TEXTBOOKS *Link;
};
class STACK
{
	TEXTBOOKS *Top;
public:
	STACK(){Top=NULL;}
	void Push();
	void Pop();
	~STACK();
};

Write a function REVCOL (int P[] [5], int N, int M) in C++ to display the content of a two-dimensional array, with each column content in reverse order.

Note: Array may contain any number of rows.

For example, if the content of the array is as follows:

15 12 56 45 51
13 91 92 87 63
11 23 61 46 81

The function should display output as:

11 23 61 46 81
13 91 92 87 63
15 12 56 45 51

 

Write a function ALTERNATE (int A[][3],int N,int M) in C++ to display all alternate element from two-dimensional array A (starting from A[0][0]).
For example:
If the array is containing:

23 54 76
37 19 28
62 13 19

The output will be:

23 76 19 62 19