I started teaching in 1977, and across my nearly 50 years, I noticed that students were always interested in the history of ...

The word NOT and its equivalent symbols are also prefix operators. The following are examples of prefix operators used with variables, constants, functions, and parenthetic expressions: When used to ...

Throughout technical documentation, it is important to give examples and explain how and why you used string handling technique, basic arithmetic and logical and relational operators. Your ...

An operand can be a variable, a SAS function, or a constant. See Specifying an Operand. operator a symbol that requests a comparison, logical operation, or arithmetic calculation. All SAS expression ...