A procedure is run by calling it. To call it, a programmer uses the procedure name and includes any parameters (values) that the procedure needs, for example: SUBROUTINE f_TO_c(temperature_in_f) ...

There are two types of subroutine: Procedures perform a specific task but do not return a value. Functions manipulate data and return a value to the main program. A local variable is a variable that ...

CALL statements invoke a subroutine to perform calculations, operations, or a service. CALL statements are often used in place of functions when the operation returns multiple results or, in some ...

All the optimization subroutines require at least two input arguments. The other arguments that can be used as input are described in the following list. As indicated in Table 17.1, not all input ...