HP 3000 Manuals HP 3000 Manuals
Avoiding Unstructured FORTRAN 77 Features One factor in making a program transportable is to "plan for the future" in regard to changes. In general, the unstructured features of FORTRAN 77 make programs harder to understand and modify, and therefore reduce portability. Some of the unstructured features are: * Assigned GOTO statement * ASSIGN statement * Computed GOTO statement * Arithmetic IF statement * Any use of Hollerith data * EQUIVALENCE statement The list above includes only the least structured features of FORTRAN 77. You should also omit any other features from your programs that you think are unstructured.