C++ Unit 1 Review

Every C++ program will have a function that is called ____.

• start

• begin

• main

• int

Which line of code is the correct way to display the message Hello World! to the console screen?

• cout << Hello World!;

• cout << "Hello World!"

• cout << "Hello World!";

• cout >> "Hello World!';

Which of the following will correctly declare an integer variable called num?

• num;

• num int;

• int num

• int num;

Which of the following will correctly read in a value to the integer variable named num?

• cin << num;

• input >> num;

• cin >> num;

• cin >> num

Which of the following will display the value of the integer variable named num?

• output << num;

• cout >> num;

• cout << num;

• cout << "num";

What is the result of the division 35 / 4 in C++?

• 8

• 9

• 8.75

• 3

What is the correct C++ translation of the mathematical expression below?

10a² + b²

• 10a^2 + b^2

• 10 * (a * a) + b * b

• (10a) * (10a) + b * b

• 10 * a ^ 2 + b ^ 2

What is the output of the following C++ statement?

cout << 25/2;

• 12.5

• 12

• 25/2

• 13

What is the output of the following C++ statement?

cout << 25.0/2;

• 12.5

• 12.0

• 12

• 25.0/2

Which of the following statements will declare and initialize an int variable day to have a value of 1.

• int day;

• int 1 = day;

• day = 1;

• int day = 1;