I have a quiz whom ever passes get brainiest its on fallout four

List a few alternative options and input and output over the standerd keyboard and monitor. explain their functioning in details.

3. what is the output of the following statements? temporary object1; temporary object2("rectangle", 8.5, 5); temporary object3("circle", 6, 0); temporary object4("cylinder", 6, 3.5); cout < < fixed < < showpoint < < setprecision(2); object1.print(); object2.print(); object3.print(); object4.print(); object1.set("sphere", 4.5, 0); object1.print();

(, urgent need): how do i change my username