Intel fortran-80 Assignment Statements, Dimension, Element, Declarator, Subscript, Referenced

FORTRAN-80 Defining Variables, Arrays, And Memory

where 'ary' is an array name and's' is a subscript. The number of subscripts must equal the number of dimensions in the array declarator.

Each subscript is an integer expression in the range 1 :5 s:5 upper-bound. If the upper dimension bound of a dummy array is an asterisk, the value of the corresponding subscript must not exceed the size of the corresponding actual array.

Examples:

ARRAY(2,6) = A

ARRAY(I + J, 3) = 8

ARRAY(M,M + N,M-N) = A + SQRT(8)

Figure 3-1 can be used to calculate which element in the storage sequence of array elements is being referenced. In this figure, 'n' is the number of dimensions (1 :5 n:5 7), 'd' is the value of the upper dimension bound, and's' is the subscript ex- pression.

	Dimension		Element
n	Declarator	Subscript	Referenced
1	(d1)	(s1 )	s1
2	(d 1,d2)	(s1,s2)	1 + (81-1)
			+ (s2-1)*d1
3	(d1,d2,d3)	(s1,s2,s3)	1 + (s2-1)
			+ (s2-1 )*d2
			+ (s3-1) * d2 * d 1
n	(d1, ...,dn)	(s1, ... ,sn)	1 +(s1-1)
			+(s2-1)*d1
			+ (s3-1)*d1 *d2
			+ ...
			+(sn-1)*dn-1
			+ dn-2* ...d1
		Fig. 3-1 Subscript Reference

3.3 Assignment Statements

The type statements correlate a type and statements described in this section assign elements.

length with a symbolic name. The values to variables, arrays, or array

Assignment statements are used to assign arithmetic, logical, or character values to variables and array elements. These statements have no keyword.

The ASSIGN statement is used to assign a numerical statement label to an integer- variable symbol name.

The DATA statement is used to initialize variables, arrays, and array elements to specific values.

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