Expression (Computer Science)

Expression (Computer Science)

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Description

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. An expression in a programming language is a combination of explicit values, constants, variables, operators, and functions that are interpreted according to the particular rules of precedence and of association for a particular programming language, which computes and then produces another value. This process, like for mathematical expressions, is called evaluation. The value can be of various types, such as numerical, string, and logical. For example, 2+3 is an arithmetic and programming expression which evaluates to 5. A variable is an expression because it is a pointer to a value in memory, so y+6 is an expression. An example of a relational expression is 4==4 which evaluates to true. In C and most C-derived languages, a call to a function with a void return type is a valid expression, of type void. Values of type void cannot be used, so the value of such an expression is always thrown away.show more

Product details

  • Paperback | 60 pages
  • 152 x 229 x 4mm | 100g
  • Frac Press
  • United States
  • English
  • 6136721295
  • 9786136721293