REAL: Define symbolic names to be of real data type
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REAL :: scalar=scalar_value, vector(elements), matrix(rows, columns)
specifies scalars, vectors, and matrices
scalar_value, elements, rows and columns must be known at compile time, like:
integer
constants
, like
REAL :: x=3.14, vec(100), mtx(20,100)
predefined at compile time
, like
REAL, PARAMETER :: elements=100 ! defines the
symbolic constant
elements
REAL :: rows=20 ! predefines the scalar
variable
rows
DATA columns/50/, scalar_value=3.14 ! predefines the scalars columns and scalar_value
⇒ Define a numerical array
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