<< Conditional test | IBExpert Glossary | Constraint >>


In programming, a constant is a value that never changes. The other type of values that programs use is variables, symbols that can represent different values throughout the course of a program.

A constant can be

  • a number, such as 25 or 3.6
  • a character, such as a or $
  • a character string, such as "this is a string"