CS first quiz

What are the 3 basic instruction types?

Input, process, output.

What is a variable?

A named reference to a value.

What does = mean in Python?

Assignment; it assigns a value to a variable.

What is an expression?

A piece of code evaluated to produce a value.

What does print() do?

Displays output

What does input() do?

Gets input from the user and returns it as a string.

What is a string?

Text, usually written inside quotes, like "Hello".

What is the difference between "123" and 123?

"123" is a string; 123 is an integer

What does int() do?

Converts a numeric string into an integer

What does int() do?

Converts a numeric string into an integer.

Syntax error

Code violates Python's rules; the program cannot run.

What is a runtime error?

An error that happens while the program is running.

What is a logic error?

The program runs but produces the wrong result.

What is a ValueError?

An invalid value is used, like int("Henry").

What is a NameError?

A variable/name is used that doesn't exist.

What is a TypeError?

An operation uses incompatible/incorrect types.

What is an algorithm?

A sequence of instructions that solves a problem.