AI Generated Cheatsheets

Fortran Cheatsheet

Overview of unique features

• High-performance programming language
• Designed for scientific and engineering applications
• Supports array operations and linear algebra
• Uses verbose syntax
• Can be used for numerical simulations and modeling

Variables

PROGRAM MYPROGRAM
  IMPLICIT NONE
  INTEGER :: X = 42
  REAL :: Y
  PARAMETER (MYCONST = 10)
  INTEGER, DIMENSION(3) :: MYARRAY = [1, 2, 3]
END PROGRAM MYPROGRAM

Functions

FUNCTION ADD(X, Y)
  IMPLICIT NONE
  INTEGER, INTENT(IN) :: X, Y
  ADD = X + Y
END FUNCTION ADD

PROGRAM MYPROGRAM
  IMPLICIT NONE
  INTEGER :: RESULT
  RESULT = ADD(3, 4)
END PROGRAM MYPROGRAM

Loops

DO I = 1, 10
  ! do something
END DO

DO WHILE (CONDITION)
  ! do something
END DO

Conditionals

IF (X > Y) THEN
  ! do something
ELSE
  ! do something else
END IF

Array operations

REAL, DIMENSION(3) :: X = [1.0, 2.0, 3.0]
REAL, DIMENSION(3) :: Y = [4.0, 5.0, 6.0]

! Element-wise addition
X = X + Y

! Element-wise multiplication
X = X * Y

! Dot product
DOT_PRODUCT = DOT_PRODUCT(X, Y)

Resources

• Fortran documentation
• Fortran tutorial
• Fortran forum for community support and troubleshooting.

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