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Computer Computer Difficulty: Medium

Which of the following properties identifies the type of information stored in a field? What is the output for the below code? class A{ public A(){ System.out.println("A"); } public A(int i){ this(); System.out.println(i); } } class B extends A{ public B(){ System.out.println("B"); } public B(int i){ this(); System.out.println(i+3); } } public class Test{ public static void main (String[] args){ new B(5); } } In Python, which module provides a set of functions for functional programming, such as map and filter? What will be the output of the following C++ code? #include <iostream> using namespace std; class Base { public: Base ( ) { cout << "1" << endl; } ~Base ( ) { cout << "2" << endl; } }; class Derived : public Base { public: Derived ( ) { cout << "3" << endl; } ~Derived ( ) { cout << "4" << endl; } }; int main( ) { Derived x; } Which of the following is the symbol that must be used in an email address?