Data Types and Declarations

The following is a list of data types and declarations that you can use in a Fortran expression.

• You can use the following data types: INTEGER (assumed to be long), REAL, DOUBLE PRECISION, and COMPLEX.
   
• You cannot use implied data types are not permitted.
   
• You can only use simple declarations. You cannot use a COMMON, BLOCK DATA, EQUIVALENCE, STRUCTURE, RECORD, UNION, or an array declaration.
   
• Your can refer to variables of any type in the target program.