If a 3-bit sequence number is used, then it could distinguish 8 different frames. Since the number of frames that could be transmitted at a time is no greater half... Read more »
Stack is a Last In First Out (LIFO) data structure. Queue is a First In First Out (FIFO) data structure Read more »
char *strrev(char *s) { int i = 0, len = strlen(s); char *str; if ((str = (char *)malloc(len+1)) == NULL) /*cannot allocate memory */ err_num = 2; return (str); } while(len) str[i++]=s[?len]; str[i]... Read more »
void reverselist(void) { if(head==0) return; if(head->next==0) return; if(head->next==tail) { head->next = 0; tail->next = head; } else { node* pre =... Read more »
Polymorphism is the idea that a base class can be inherited by several classes. A base class pointer can point to its child class and a base class array can store... Read more »
You can find out by using 2 pointers. One of them goes 2 nodes each time. The second one goes at 1 nodes each time. If there is a cycle, the one that goes 2 nodes... Read more »
You can do the Echo $RANDOM. It will return a undefined variable if you are from the C-Shell, just a return prompt if you are from the Bourne shell, and a 5 digit... Read more »
A class is made abstract by declaring one or more of its virtual functions to be pure. A pure virtual function is one with an initializer of = 0 in its declaration Read more »
Overloading a method (or function) in C++ is the ability for functions of the same name to be defined as long as these methods have different signatures (different... Read more »
In C++ terminology, all public methods in Java are virtual. Therefore, all Java methods can be overwritten in subclasses except those that are declared final, static,... Read more »
A static variable declared outside of any function is accessible only to all the functions defined in the same file (as the static variable). However, a global variable... Read more »
The void pointer is useful becuase it is a generic pointer that any pointer can be cast into and back again without loss of information. Read more »
It permits a program to reference an identifier in the global scope that has been hidden by another identifier with the same name in the local scope. Read more »
Two. There are two formats for initializers in C++ as shown in the example that follows. The first format uses the traditional C notation. The second format uses... Read more »
Virtual Methods are used to use the polymorphisms feature in C++. Say class A is inherited from class B. If we declare say function f() as virtual in class B and... Read more »
Multiple inheritance is a feature in C++ by which one class can be of different types. Say class teachingAssistant is inherited from two classes say teacher and... Read more »
An argument can be passed in two ways. They are Pass by Value and Passing by Reference. Passing by value: This method copies the value of an argument into the formal... Read more »
a) In overloading, there is a relationship between methods available in the same class whereas in overriding, there is relationship between a superclass method and... Read more »
A super class is a class that is inherited whereas sub class is a class that does the inheriting. Read more »
“=” is an assignment operator while, “==” is comparative operator a=b; //b’s value is stored in a if( a==b) // a’s value is compared with b Read more »