How to fix my pc from this

How would you categorize the software that runs on mobile devices? break down these apps into at least three basic categories and give an example of each.

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();

Which key should you press to leave the cell as it originally was? a. delete b. cancel c. backspace d. enter