Lesson 1

Question 1

algorithm

Answer 1

a set of ordered and finite steps to solve a given problem.

Question 2

flowchart

Answer 2

graphical representation of an algorithm

Question 3

decision tables

Answer 3

a more compact and readable format for presenting an algorithm

Question 4

program

Answer 4

sets of precise and complete instructions to accomplish a task

Question 5

syntax

Answer 5

vocabulary and grammar in a language

Question 6

class

Answer 6

set of data and methods

Question 7

variables

Answer 7

provide temporary storage during the execution of a program

Question 8

constants

Answer 8

data fields or local variables whose value cannot be modified.

Question 9

array

Answer 9

collection of items in which each item can be accessed by using a unique index.

Question 10

operators

Answer 10

symbols that specify which operation to perform on the operands before returning a result.

Question 11

methods

Answer 11

code blocks containing a series of statements. Methods can receive input via arguments and can return a value to the caller. If a method were to return a value, the appropriate data type for the return value would be used instead of “void.”

Question 12

decision structures

Answer 12

introduce decision-making ability into a program. They enable you to branch to different sections of the code depending on the truth value of a Boolean expression.

Question 13

C# decision-making control structures:

Answer 13

“if,” “if-else,” and “switch” statements.

Question 14

if statement

Answer 14

will execute a given sequence of statements only if the corresponding Boolean expression evaluates to true.

Question 15

if-else statement

Answer 15

allows your program to perform one action if the Boolean expression evaluates to true, and a different action if the Boolean expression evaluates to false.

Question 16

switch statement

Answer 16

allows multi-way branching. They can often simplify a complex combination of if-else statements.

Question 17

C# control structures for repetitive tasks:

Answer 17

the while loop, the do-while loop, the for loop, and the foreach loop

Question 18

examples of control transfer statements which transfer control outside the loop:

Answer 18

break, goto, return, and throw

Question 19

statement to pass control to the next iteration of the loop without exiting the loop:

Answer 19

continue statement

Question 20

while loop

Answer 20

repeatedly executes a block of statements until a specified Boolean expression evaluates to false.

Question 21

general form of the while loop:

Answer 21

while (boolean test)

statement

Question 22

three main parts of a while loop:

Answer 22

1. Initializer
2. Loop test
3. Termination expression

Question 23

do-while loop

Answer 23

repeatedly executes a block of statements until a specified Boolean expression evaluates to false. The do-while loop tests the condition at the bottom of the loop.

Question 24

general form of the do-while loop:

Answer 24

do
statement
while (boolean test);

Question 25

for loop

Answer 25

combines the three elements of iteration - initialization, termination condition expression, and the counting expression - into a more readable code.

Question 26

general form of the for loop:

Answer 26

for (init-expr; cond-expr; count)

statement

Question 27

foreach loop

Answer 27

useful for iterating through the elements of a collection

Question 28

parameter syntax for a foreach loop:

Answer 28

(ElementType element in collection)

Question 29

recursion

Answer 29

a programming technique that causes a method to call itself in order to compute a result

Question 30

distinct parts of a recursive algorithm:

Answer 30

base case and recursive case

Question 31

exception

Answer 31

an error condition that occurs during the execution of a program.

Question 32

How to handle exceptions…

Answer 32

Place the code that throws the exceptions inside a try block, and place the code that handles the exceptions inside a catch block.

Question 33

finally block

Answer 33

used in association with the try block. It is always executed regardless of whether an exception is thrown. The finally block is often used to write clean-up code.