Module 2 Flashcards
Comments
Information ignored by the compiler and are used to describe the code
Preprocessor directive
A C program line beginning with # that provides an instruction to the preprocessor
Library
A collection of useful functions and symbols that may be accessed by a program
Constant macro
A name that is replaced by a particular constant value before the program is sent to the compiler
Declarations
The part of the program that tells the compiler the names of memory cells in a program
Executable statements
Program lines that are converted to machine language instructions and executed by the computer
Function body has two parts:
Declarations and executable statements
Reserved word
A word that has special meaning in C
int
Integer; indicates that the main function returns an integer value
void
Indicates that the main function receives no data from the operating system
double
Indicates that the memory cells store real numbers
return
Returns control from the main function to the operating system
Variables
A name associated with a memory cell whose value can change
Variable declarations
Statements that communicate to the compiler the names of variables in the program and the kind of information stored in each variable
char
Indicates that the memory cells store a character.. anything on the keyboard can be a character.. always inside of single quotes ‘ ‘
Data type
A set of values and operations that can be performed on those values
ASCII (American standard code for information interchange) code
The most common used by the C compiler to determine what integer value a character will be stored as in memory
Function
A block of code made up of a group of statements that perform a task
Function call
Statement used to invoke a function
Input operation
An instruction that copies data from an input device into memory
Output operation
An instruction that displays information stored in memory
Input/output function
A C function that performs an input or output operation
Function argument
Enclosed in parentheses following the function name; provides information needed by the function
Format string
In a call to printf, a string of characters enclosed in quotes, which specifies the form of the output line
Print list
In a call to printf, the variables or expressions whose values are displayed
Placeholder
A symbol beginning with % in a format string that indicates where to display the output value
New line escape sequence
The character sequence \n, which is used in a format string to terminate an output line
Type cast
Converting an expression to a different type by writing the desired type in parentheses in front of the expression
