Intro To Programming

Front 1

Which type of data is the answer to this question: “How many students are in this room”

Back 1

Variable

Front 2

Which type of data is the answer to this question: “How many grams in a kilogram”

Back 2

A constant

Front 3

What type of data does this use “-10634”

Back 3

A whole number

Front 4

What type of data is this: “27.123”

Back 4

A decimal number

Front 5

What type of data is this: “A”

Back 5

A character

Front 6

What type of data is this “Harry Williams”

Back 6

Text (a string)

Front 7

What type of value does a whole number have

Back 7

An integer value

Front 8

What type of value does a decimal number use?

Back 8

A floating point number

Front 9

What type of value does a character have ?

Back 9

A char

Front 10

What does a computer use to store data?

Back 10

A bit

Front 11

What values can a bit have and what do they mean?

Back 11

0 and 1. They say whether something is on or off.

Front 12

What is the next largest measurement of a bit and how many bits does it use?

Back 12

A byte which uses 8 bits

Front 13

What does this binary number equal: 11011001

Back 13

1+8+16+64+128 = 217

Front 14

On an Arduino how many bits is used for a char?

Back 14

8 bits

Front 15

On an Arduino how many bits is used for a short

Back 15

16

Front 16

On an Arduino how many bits is used for a int

Back 16

16

Front 17

On an Arduino how many bits is used for a long

Back 17

32 bits

Front 18

What main 2 reasons are there for integer types and why?

Back 18

Memory efficient- data types take up the whole memory even if they aren’t filled so by having lots of different lengths it saves wastage and therefore memory.

Program efficiency- It makes the program faster

Front 19

In programming what does this mean : “=“

Back 19

Assignment. You use it to give a variable a value for example y = 5

Front 20

In programming what does this mean : “%”

Back 20

Modulo- it tells you what is left over

Front 21

For an int would “y / 3” or y % 3” give you 2

Back 21

y / 3

Front 22

For an int would “y / 3” or y % 3” give you the remainder of the sum

Back 22

“y % 3”

Front 23

What data type has been used in this line would the answer be right or wrong. Why would the answer be this?

“(Type) y = 4000 * 300;”

Back 23

It uses an int and the answer would be 20352. This is the wrong answer as there was not enough memory to store the full number and it has instead used the final part of the answer. It has then calculated this answer back to English and therefore the number is wrong

Front 24

What data type has been used in this line would the answer be right or wrong. Why would the answer be this?

“(type) y = (type) 4000 * (type) 300;”

Back 24

It uses a long and the answer would be 1200000 which is correct because there was enough memory

Front 25

What does “Serial.begin(9600) do?

Back 25

Starts the serial port so it can output.

Front 26

What does this do: Serial.print()

Back 26

Prints to the serial port

Front 27

What does this do: Serial.println()

Back 27

Prints to the serial port on a new line

Front 28

What does this do: Serial.readint

Back 28

Reads an integer from the serial line

Front 29

How do you declare a float and what does it do

Back 29

float variableName. It lets you use a decimal number like 17.86

Front 30

What is the bit value of a float

Back 30

32

Front 31

How many significant figures can floats give you

Back 31

7

Front 32

In bit arrangement how many bits are for each of these :

The sign.

The exponent

The fraction

Back 32

1

8

23

Front 33

Are the pros of floats

Back 33

Can store very large numbers

Can store very small numbers

Calculations give accurate answers

Front 34

What must the types of arrays do

Back 34

Be the same type in a particular array. For example an array of ints or chars

Front 35

What is a for loop

Back 35

A loop that runs until a condition is met.

Front 36

What is a while loop?

Back 36

A while loop is a loop that runs until a statement is no longer true

Front 37

What is a do while loop

Back 37

A do while loop is a loop that happens whilst another operation is being carried out

Front 38

What are the cons of floats

Back 38

The use up a lot of memory

Calculations take longer than integer calculations

Difficult to test if 2 values are equal

Front 39

What does the statement

“X = x + 3” look like as a compound operator

Back 39

X += 3

Front 40

Using just 3 characters how can you add one to a variable

Back 40

X++

Hint 40

The shortest version of x = x-1

Front 41

What does && mean

Back 41

And

Front 42

What does || mean

Back 42

Or

Front 43

What does > mean

Back 43

Greater than

Front 44

What is a for loop

Back 44

A loop that runs for a specific amount of times

Front 45

What does == mean

Back 45

Comparison

Front 46

What does != mean

Back 46

Not

Front 47

What is a while loop?

Back 47

A while loop is a loop that runs until a statement is no longer true. Aka whilst a condition is met.

Front 48

Pre or post increment “x == y;” and what happens in this statement.

Back 48

Pre increment 1 is added to y and ys value is passed to x

Front 49

Pre or post increment “x=y++;” and what happens in this statement.

Back 49

Post increment. The value of y is given to x then 1 is added to y.

Front 50

Pre or post increment “x = ++y;” and what happens in this statement.

Back 50

Pre increment 1 is added to y and ys value is passed to x

Front 51

What is a pointer?

Back 51

It stores the memory address of a variable. Means you can switch data sets without copying data.

Front 52

How do you set a pointer?ho

Back 52

int *(pointer name) = & (variable name);

int *piValue = & iCount;

Front 53

How do you use a pointer as a dereference?

Back 53

int*piValue = & iCount;

Int idata = *piValue;// piValue;