EECS 183 Exam 1 Flashcards

Input and Output in C++

• Use getline(cin, stringVar) to read input from the user that includes spaces.

Output Operator

• The cout operator is represented by the symbol > for outputting text and values to the console.

Integer Range

• The range of int variables spans approximately ±2 billion, specifically from -2,147,483,648 to 2,147,483,647.

Constant Initialization

• A constant variable is initialized using the identifier format CONST_VAR.

Variable Type Evaluation

• When evaluating the expression doubleVar = 36 * intVar, the resulting type is an int but may be displayed as a double with decimal points (e.g., 36.00).

Equality Operator

• The == operator is used to check if two values are equal.

Assignment Operator

• The = operator serves as the assignment operator, used to assign values to variables.

Function Declaration

• A function declaration follows the format: return type function name (parameter list); indicating its return type, name, and parameters.

Function Definition

• A function definition is structured as: return type function name(parameter list) { code of function }, containing the implementation details.

ASCII Order

• In ASCII, characters are ordered from 0-9, followed by A-Z, and then a-z, indicative of numerical and alphabetical sorting.

Comparing Floating Point Numbers

• For comparing floating point values, avoid using == or !=. Instead, use fabs(x - y) < 0.0001 to check for equality and fabs(x - y) > 0.0001 to check for inequality.

Operator Precedence

• The order of operators evaluated in expressions follows this hierarchy: parentheses ( ), logical NOT !, arithmetic operations, and then relational operators like >.