Fortran 90

• Fortran Evolution
  • A Brief History of FORTRAN 77
  • Drawbacks of FORTRAN 77
  • New Fortran 90 Features
  • Advantages of Additions
• Language Obsolescence
  • Obsolescent Features
  • Undesirable Features
• Fortran 90 Programming
  • Example of a Fortran 90 Program
• Language Elements
  • Source Form
  • Free Format Code
  • Character Set
  • Significant Blanks
  • Names
  • Comments
  • Statement Ordering
• Data Objects
  • Intrinsic Types
  • Literal Constants
  • Implicit Typing
  • Numeric and Logical Declarations
  • Character Declarations
  • Constants (Parameters)
  • Initialisation
  • Examples of Declarations
• Expressions and Assignment
  • Expressions
  • Assignment
  • Intrinsic Numeric Operations
  • Relational Operators
  • Intrinsic Logical Operations
  • Intrinsic Character Operations
• Simple Input / Output
  • PRINT Statement
  • READ Statement
  • Operator Precedence
  • Precedence Example
  • Cost of Arithmetic Operators
  • Precision Errors
• Control Flow
  • IF Statement
  • IF Construct
  • Nested and Named IF Constructs
  • Conditional Exit Loops
  • Conditional Cycle Loops
  • Named and Nested Loops
  • DO ... WHILE Loops
  • Indexed DO Loop
  • Scope of DO Variables
  • SELECT CASE Construct
• Mixing Objects of Different Types
  • Mixed Numeric Type Expressions
  • Mixed Type Assignment
  • Integer Division
• Intrinsic Procedures
  • Type Conversion Functions
  • Mathematical Intrinsic Functions
  • Numeric Intrinsic Functions
• Arrays
  • Array Terminology
  • Declarations
  • Array Conformance
  • Array Element Ordering
  • Array Syntax
  • Whole Array Expressions
  • Visualising Array Sections
  • Array Sections
  • Printing Arrays
  • Input of Arrays
  • Array Bound Violations
  • Array Inquiry Intrinsics
  • Array Constructors
  • The RESHAPE Intrinsic Function
  • Array Constructors in Initialisation Statements
  • Allocatable Arrays
  • Deallocating Arrays
  • Masked Assignment - Where Statement
  • Masked Assignment - Where Construct
  • Vector-valued Subscripts
• Selected Intrinsic Functions
  • Random Number Intrinsic
  • Vector and Matrix Multiply Intrinsics
  • Maximum and Minimum Intrinsics
  • Array Location Intrinsics
  • Array Reduction Intrinsics
• Program Units
  • Main Program Syntax
  • Procedures
  • Subroutines
  • Functions
  • Argument Association
  • Local Objects
  • Argument Intent
  • Scope
  • SAVE Attribute
• External Procedures
  • External Subroutine Syntax
  • External Function Syntax
  • Procedure Interfaces
  • Required Interfaces
  • Side Effect Functions
  • Recursive Procedures
• Procedures and Array Arguments
  • Explicit-shape Arrays
  • Assumed-shape Arrays
  • Automatic Arrays
  • Array-valued Functions
• Modules
  • Modules - General Form
  • Modules - Global Data
  • Modules - Interface Declaration
  • Modules - Procedure Declaration
  • The USE Renames Facility
  • USE ONLY Statement
• Complex Data Type
• Parameterised Intrinsic Types
  • Integer Data Type by Kind
  • Constants of Selected Integer Kind
  • Real KIND Selection
  • Kind Functions
  • Expression Evaluation
  • Logical KIND SelectionReturn to corresponding overview page
• More Intrinsics
  • Bit Manipulation Intrinsic Functions
  • Array Construction Intrinsics
  • TRANSFER Intrinsic
• Input / Output
  • OPEN Statement
  • READ Statement
  • WRITE Statement
  • FORMAT Statement / FMT= Specifier
  • Edit Descriptors
  • Other I/O Statements