4.1.1 Programming

Question 1

What is an integer ?

Answer 1

Negative or positive whole number

Question 2

What is a Real (float) ?

Answer 2

Positive or negative number with a decimal/ fractional part

Question 3

What is a boolean ?

Answer 3

Data type based on logic - one of only two values, True or False.

Question 4

What is a char ?

Answer 4

Char refers to a single character. The character can be any letter, digit, or symbol.

Question 5

What is a string ?

Answer 5

Array of characters

Question 6

What is static data ?

Answer 6

A type of data structure where the size and the structure is fixed at the time of its creation

Question 7

What is dynamic data ?

Answer 7

Data that is not fixed in size.
Extra memory is fetched from the heap as it is required and pointers ‘point’ to the location of the next item in the data structure in memory.

Question 8

What is a variable ?

Answer 8

A container held in main memory that can hold an assigned piece of data

Question 9

Assign the integer 99 to the variable num

Answer 9

int num = 99;

Question 10

What is a condition controlled iteration (indefinite iteration) ?

Answer 10

A set of instructions is repeated based on whether a condition evaluates as true or false.

Question 11

What is a count controlled iteration (definite) ?

Answer 11

A set of instructions is repeated a specific number of times.

Question 12

What is an infinite iteration ?

Answer 12

A set of instructions that repeats and never terminates.

Question 13

For loop syntax

Answer 13

for (initialiser (int i = 0) ; condition (i >,=,<…) ; iterator (i++))

Question 14

foreach : items in an array / list

Answer 14

foreach( datatype name in array)

console.Write(name)

Question 15

While loop syntax

Answer 15

While ( condition is true)
{
INSTRUCTIONS
}

Question 16

Do while loop VS while loop

Answer 16

Do while checks whether the condition is true at the end of the loop instead of at the start.

Question 17

Do while syntax

Answer 17

do
{
INSTRUCTIONS
}
while (condition is true)

Question 18

What is a nested loop ?

Answer 18

Loop inside another loop.

Question 19

Switch statement syntax

Answer 19

Switch (variable or item)
case VALUE:
INSTRUCTIONS
break;
case VALUE2:
INSTRUCTIONS
break;
case VALUE3:
INSTRUCTIONS
break;

Question 20

If statement syntax

Answer 20

if (item == value)
{
instructions
}
else
{
Instructions
}

Question 21

What is a procedure ?

Answer 21

A procedure is a set of instructions that will be executed when the procedure is called

Question 22

What is a function ?

Answer 22

Procedure that returns a value.