UBC CPEN 223 – FINAL Practice Test Exam GRADED A+ with Revised Q & A 2023/2024 VERIFIED

UBC CPEN 223 – FINAL Practice Test Exam GRADED A+
with Revised Q & A 2023/2024 VERIFIED
3 C's for "good Software" correct answers - Correct (safe from bugs)
- Comprehensible (easy to understand)
- Changeable (ready to change)

Static Checking correct answers The checking that is done at compilation.
- Bug automatically found before program runs

Dynamic Checking correct answers The checking that is done at run time.
- Found automatically

Benefits of C# correct answers -Safety
> Type safe, static checking, exception handling, etc
- Ubiquity
> Multiplatform: Mobile, Web, Windows/Mac/Linux
- Elegance
- Popular
- Powerful
- High-level
- Modern object oriented

Issues with C# correct answers - Verbose: takes a lot of code to do simple task
- Large: many features

static void Main() correct answers The starting place of a program

int varName = 92; correct answers Declaring an int type variable

double VarName = 1.45; correct answers Declaring a double type variable

char varName = '*'; correct answers Declaring a char type variable

Two categories of C# types correct answers - Value types
- Reference types

C# operators correct answers - arithmetic ( +, -, /, % (remainder), *)
- comparison (==, !=, >, >=, ...)
- conditional (&&, ||, !)

C# selection statements correct answers - if(condition)
- else if(condition)
- switch *an alternative to if-else statements

C# repetition statements correct answers - while
- for

,- do-while

Class correct answers The most important user defined type
- Contains two types of members;
> Data members (fields, ..) that store the data within the ______.
> Function members (methods, constructors, ...) that perform operations on the data

Methods correct answers A block of code that contains a series of statements.

Arrays correct answers stores a fixed-size collection of elements

How to initialize an array correct answers int[] nameOfVariable = new int[5];
- The size of the ______ is 5.
int [] nameOfVariable = new int[] {1, 2, 3, 4, 5};
int [] nameOfVariable = {1, 2, 3, 4, 5};

What is a Data Type? correct answers A _____ is a set of values and the operations that are permitted on
the values

Value pre-defined types correct answers - int
- long
- double
- char
- uint
- bool
- decimal
- bool
- byte
- sbyte
- float
- uint
- short
- ushort

Reference pre-defined types correct answers - object
- string
- dynamic

A value type correct answers This type needs only one allocated memory space that stores the actual
data.

A reference type correct answers This type stores the *mention to some other memory location where
the actual data is stored.

Two regions of memory that store data correct answers - stack
- heap

Stack correct answers location for storage of value types

, (last-in, first-out data structure)
- Primary operations:
> push() : addition of an element to the top of the stack
> pop() : removal of an element from the top of the stack
> Clear()
> Remove()
> ToArray()
> Contains()
> Count()

Heap correct answers The reference type is stored in the stack but the actual data is stored in the
"______"

User-defined types correct answers - class
- struct
- array
NOTE: can be classified as either reference or value types

_______ is a type that stores logically related data and functions correct answers a class

Declare a class correct answers class nameOfClass
{
//member declarations
}

A field correct answers - Stores data
- Is a variable (of any type) that is a member of a class
-

PascalCasing correct answers Every word is capitalized

camelCasing correct answers The first word is lowercase, and then concatenating capitalized words

A property correct answers A _________ represents data and appears very much like a field
- Uses PascalCasing

A constructor correct answers A special method that is used to initialize the state of a class instance.
- Executed whenever a new instance of a class is created
- Has no return type
- Named the same as the class it is within

Local variable correct answers Holds temporary data within the scope of the method.
- uses camelCasing

Access modifier correct answers optionally specifies what other part of the program can access the
member

syntax: access modifier for a field correct answers AccessModifier Type Identifier