Comp Sci C++ Assessment

Pataasin ang iyong marka sa homework at exams ngayon gamit ang Quizwiz!

What is the symbol for modulus?

%

What is the symbol for division?

/

What is used for a block comment?

/* and */

What is used for inline comments?

//

How many bytes are used for char?

1 byte

How many bytes are used for int?

4 bytes

What does every C++ statement end with?

A semicolon ;

Why use namespace std; ?

Allows shorthand of cout<<, otherwise you would have to write std:: before all input or output commands

Why use <iostream> ?

Allows the computer to understand / define cout, need to include if you want to output or input data

What is int?

Any integer, no decimal points; ex. 3, -2, 0

What does /10 do?

Gets rid of the rightmost digit (digit in ones place)

What does abs(double num) do?

Gives the absolute value of a number

What does modulus do?

Gives the remainder

What does %10 do?

Gives the rightmost digit (digit in ones place)

What does getline() do?

Inputs a line of text

What does cin>> do?

Inputs information from the user

What is a variable?

Memory location that stores data

What do curly brackets {} do in C++?

Signify the start and end of a series of statements

What is char?

Single symbol in single quotes; ex. 'a', '?', '!'

What does return 0; do?

Stops the program

What happens if you divide with a double?

The result will be a double, the type of division used in math

What happens if you divide two int numbers?

The result will be an int

How do you connect outputs?

Use << between what you want to display

How do you make cin>> and getline() work together?

Use an extra getline() to clear the input system

What is the symbol for multiplication?

*

How many bytes are used for double?

8 bytes

What arrows are used for cout?

<<

What arrows are used for cin?

>>

What is double?

Any real number with decimal points; ex. 3.5, -2.31, 2.0

What is string?

Anything within quotes; ex. "hello", "true", " "

Why is cin>> sometimes less efficient than getline()?

Cin>> can only input one word

Why don't cin>> and getline() work well together?

Cin>> leaves enter in the input stream, causing getline() to think its done its job

What does declaring a variable do?

Creates a memory location

What does pow(double base, double exponent) do?

Finds the power of a given number

What happens if cin>> is used before getline()?

Getline() will not take the input

What is a block comment?

It exists on multiple lines

What is an inline comment?

It exists on one line of the program

What does cout<< do?

Outputs information to the screen

What is C++ order of operations? ]

Parentheses, Multiplication/Division/Modulus, Addition/Subtraction

What does round(double num) do?

Properly rounds a number

What does hypot(double a, double b) do?

Returns the hypotenuse of a right triangle

What does sqrt(double num) do?

Returns the square root of a number

What does floor(double num) do?

Rounds a number down

What does ceil(double num) do?

Rounds a number up

What does int main() do?

Runs the program, the program counter starts at the first line within it

What do endl; and "\n" do?

Tell the computer to go to a new line

Why would you use <cmath>?

To use the functions in the math library

What is bool?

True or false; NOT within quotes

What is a literal?

Values that do not change

What do we use instead of literals?

Variables


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