Variables

Scratch dosn't provide much in the way of data types for variable; in fact, there is only one data type and that can be an integer or a real value.

In the example below, the score for the game is initialised (set to 0) and then when a condition arises, the value of the score is increased.

Other places that these variables can be used are in parametres for sensing statements.

Exercises

1 Write a program using a variable that is used as a switch - a value of 0 indicates that the state is off and a value of 1 indicates that the state is on. Use it to turn an animation off.

2 Modify the program created in (1) to allow and animation to be turned on and off.

3