ESP - Week 4

Question 1

bool Datatype cast

Answer 1

i = int(true/false)
i = 1 or 0

Question 2

Constant syntax

Answer 2

const int int_name = number;

Question 3

Static declarations

Answer 3

Keeps the value of a variable inside a loop without needing global scope

Question 4

Defining new types

Answer 4

struct {
datatype type_name;
} structure_name;

Question 5

enum syntax

Answer 5

enum {x, y, z} enum_name

Question 6

Making a pointer

Answer 6

int *x;

Question 7

What is the significance of int b[10];

Answer 7

b reserves space for 10 integers and points b at the first one (the zeroth)

Question 8

What is the significance of char *h = “hello”;

Answer 8

h reserves space for 5 characters (h,e,l,l,o) and a zero and points a at the first

Question 9

What is the significance of int l [] = {1,2,3,4,5};

Answer 9

l reserves space for 5 integers and points l at the first

type of l is also int *

Question 10

What is the syntax for pointer arithmetic

Answer 10

int *list = {1,2,3,4,5}
int *a;
a = list;

Question 11

Computational Models

Answer 11

Sequential - A set of statements
Communicating - Multiple sequence programs
OOP - Breaks complex software into simple pieces
Finite State - For control dominated systems

Question 12

What is the purpose of a static data type

Answer 12

It is remembered forever

Question 13

If a button used to be pressed and is not pressed now what has happened

Answer 13

It has just been released

Question 14

How to get a bool value if a variable is defined

Answer 14

ifdef

Question 15

From FSM to code (1)

Answer 15

enum all states
declare state variables
initialize
declare functions

Question 16

From FSM to code (2)

Answer 16

single switch statement
each case handles actions of state
each case checks condition and sets next state

Question 17

Flowchart model

Answer 17

Terminals: Round
Operations: Rectangle
Decision: Diamond
Input/Output: Parallelogram

Question 18

Designing system

Answer 18

Design system first then implement it