9.4 Variable Expansion

9.4.1 Synopsis

variable_name

9.4.2 Description

If a variable called variable_name exists, it will be replaced by its value. Otherwise, an empty string will be used and Cows will raise a warning.

Important: when a non-existing variable is used to test a condition within an if statement (Section 15.6), a warning message is raised and variable behaves just like an empty string. In the same fashion, two non-existing variables are considered equal.

9.4.3 Example

quote1 = "Men hunt I think maybe because they have something";
quote2 = "wrong with their own equipment and they need something";
quote3 = "else to shoot.";
quote4 = "-- Pamela Anderson";

print (quote1);
print (quote2);
print (quote3);
print (quote4);

Here, we simply define some variables and display their values. Cows' output will be:

Men hunt I think maybe because they have something
wrong with their own equipment and they need something
else to shoot.
-- Pamela Anderson