Week beginning Monday 9th October - Week one connect quiz

Look at the following as part of a typical programming problem.

This is known as a constant in a program.

literstoonegallon = 4.546

One litre is equal to 4.546 gallons.

Why would we need to have the constant: litrestoonegallon in a program?

• Because we need to divide the amount of fuel used by this constant to arrive at the number of litres used and the value will always change

• Because we need to divide the amount of fuel used by this variable to arrive at the number of gallons used

• Because we need to divide the amount of litres used by this constant to arrive at the number of gallons used. This value will never change

• Because we need to divide the amount of miles done by this constant to arrive at the number of gallons used

An algorithm is

• a set of functions that can be followed to solve a problem

• a set of instructions that can be followed to solve a problem

• a set of variables that can be followed to solve a problem

• a set of constants that can be followed to solve a problem

Consider that you were going to paint this very classroom. Which from the following would you consider?

• Measure the windows and ceiling. Measure the length and height of each of the four walls, then subtract the measurements of each of the windows.

• Measure the windows and doors. Measure the length and height of each of the four windows, then subtract the measurements of each of the four walls.

• Measure the windows and doors. Measure the length and height of each of the four walls, then subtract the measurement of each of the ceiling.

• Measure the windows and doors. Measure the length and height of each of the four walls, then subtract the measurements of each of the windows.

Before painting this classroom would you be right to assume that that the classroom in the floor below would require the same amount of paint?

• Yes

• No

The difference between a constant and a variable is that:

• a constant can be changed whilst a program is running

• a constant cannot be changed whilst a program is running but a variable can

• a constant can be changed whilst a program is running and so can a variable

• a variable cannot be changed whilst a program is running

A tank of fuel hold 80 litres and 650 miles has been clocked up when it is empty. What would the miles per gallon be?

1 litre is equal to 4.546 gallons.

• 22.98 MPG

• 36.95 MPG

• 32.98 MP

• 50.98 MPG

Diagnostic question - Which of the following topics do you feel the least confident at?

• Variables and functions

• Constants

• Conditional statements

• Iteration

• Data structures