VARIABLES

The most basic building block is a variable. They store values that we use in our program. A variable can hold numbers, text, or logical values “true” and “false”.

“sunny” is our variable, and in this case, we can assign it a value of either true or false right above the “If Statement” code, just like this:

sunny = true

if sunny then

print “have a nice day”

else 

print “don’t forget your umbrella”

endif

Variables are the simplest thing to learn, yet without them, our programs would be clueless.

To add numbers, we can use two variables:

int iFirstNumber = 3

int iSecondNumber = 5

print iFirstNumber + iSecondNumber 

When we run this code, it returns the sum of these two variables which is 8.

The int declaration tells a compiler to expect integer variables. It means, in this example, we can only use integer numbers. Anything else would certainly confuse our program.

Next page ->
DEFINING AND NAMING VARIABLES

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