A statement that assigns a value to a variable.
To join two operands end to end.
Information in a program that is meant for other programmers (or anyone reading the source code) and has no effect on the execution of the program.
An update that decreases the value of a variable.
To simplify an expression by performing the operations in order to yield a single value.
A combination of variables, operators, and values that represents a single result value.
- floating point
A type that represents numbers with fractional parts.
An update that increases the value of a variable (often by one).
A type that represents whole numbers.
A reserved word that is used by the compiler to parse a program; you cannot use keywords like
whileas variable names.
A memory aid. We often give variables mnemonic names to help us remember what is stored in the variable.
An operator, denoted with a percent sign (
%), that works on integers and yields the remainder when one number is divided by another.
One of the values on which an operator operates.
A special symbol that represents a simple computation like addition, multiplication, or string concatenation.
- rules of precedence
The set of rules governing the order in which expressions involving multiple operators and operands are evaluated.
A section of code that represents a command or action. So far, the statements we have seen are assignments and print statements.
A type that represents sequences of characters.
A category of values. The types we have seen so far are integers (type
int), floating-point numbers (type
float), and strings (type
An assignment to a variable that already has a value, giving it a new one.
One of the basic units of data, like a number or string, that a program manipulates.
A name that refers to a value.