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”
print “don’t forget your umbrella”
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.