Data Types & Variables

Set the variable toy equal to 1

• ++

• +=

• =

• --

• -=

Increase the value of toy by 4 so that toy now equals 5.

• ++

• +=

• =

• --

• -=

In C#, a computer checks for type errors:

• While a program runs

• After a program runs

• Before a program runs

Write a program that uses string interpolation and the variables treeName and treefamily to print: “The maple tree is part of the deciduous family.”

• $ {treeName} {treeFamily}

• $ [treeName] [treeFamily]

• & {treeName} {treeFamily}

• $ {treeFamily} {treeName}

If the output of this code is 2, which operator would appear between the operands 14 and 6?

• *

• +

• -

• /

• %

Set the variable hours equal to 10.

• ++

• -=

• =

• --

• +=

hours = 10;

Decrease the value of hours by 2 so that hours now equals 8.

• ++

• -=

• =

• --

• +=

What will the output of this program be?

• It will throw an error

• 1 ring to rule them all

• num + "ring to rule them" + population

Which of these will run without errors:

• ToLower(username)

• username.ToLower()

• String.ToLower(username)

Given this variable definition, which statement would throw an error?

• num.ToUpper();

• num + 2;

• num % 2;

• Math.Sqrt(num);