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.