*In Fortran, calculations are specified by writing expressions.Expressions look much like algebraic formulas in mathematics, particularly when the expressions involve calculations on numerical values.As with operators, the programmer can extend the meaning of assignment to types not defined intrinsically and can redefine assignment for two objects of the same derived type. In addition, arrays and pointers each have special forms of assignment statements called masked array assignment and pointer assignment, respectively.*

This chapter describes using arrays and pointers in the following contexts: The result obtained from the evaluation of an expression can be used in many ways.

For example, it can be printed or passed to a subprogram.

The formation rules for expressions imply that the defined unary operators have highest precedence of all operators, and defined binary operators have the lowest precedence of all operators.

When they appear in a context where two or more of these operators of the same precedence are adjacent, the operands are combined with their operators in a left-to-right manner, as is the case for the familiar operates on operands of type integer as well as real and complex.

When the operator is an intrinsic operator such as with two numeric operands means that the two operands are added together.

## Fortran Array Assignment

For the user-defined operators, the interpretation is provided by a user-supplied function subprogram with a designation that this subprogram is to be used to define the operation.

The formal (BNF) rules for forming expressions imply an order for combining operands with operators.

These rules specify that expressions enclosed in parentheses are combined first and that, for example, the multiply operator , respectively.

Expressions often involve nonnumeric values, such as character strings, logical values, or structures; these also can be considered to be formulas that involve nonnumeric quantities rather than numeric ones.

This chapter describes how valid expressions can be formed, how they are interpreted, and how they are evaluated.

## Comments Fortran Array Assignment

## Fortran 90 & 95 Array and Pointer Techniques - cz

This book covers modern Fortran array and pointer techniques. The left and right sides of a whole-array assignment statement may have.…

## Chapter 7. Expressions and Assignments

An assignment statement is only one of the Fortran statements in which expressions may. For intrinsic operators, when an array is an operand, the operation is.…

## Pointers and arrays.

Please note that the pointer assignment does not mean that the data in the. Please remember that a pointer in Fortran 90 has both type and rank, and that.…

## Introduction to Fortran 90, Arrays, QUB

The fourth statement uses random as an array of indices and assigns the value of 0.0 to the array elements of a. Fortran 90 allows arrays to have zero size.…

## Fortran 90 array processing - HPJava

Naturally one can use array-valued expressions in assignments. The simplest version has exactly the same syntax as the scalar Fortran assignment.…

## Fortran Reference Guide - PGI Compilers

A Fortran assignment statement can be any of the following ‣ An intrinsic assignment statement. ‣ A statement label assignment. ‣ An array assignment.…

## Compilation of array expressions in Fortran Think In Geek

The first two assignments are correct because Fortran 90 allows promoting conforming in the Standard parlance a scalar to an array of some.…

## Mistakes in Fortran 90 Programs That Might Surprise You

In this example we assign components of a derived type with intentout. program. incb uses a Fortran 90 style assumed shape array containing dimension.…

## Arrays Silverfrost FTN95 Help

Fortran for Windows, Free edition available. classed as elemental can be used in an array expression to carry out assignment on an element by element basis.…

## Introduction to Fortran 90 - UV

Array Assignment. 40. Whole array assignment. 40. Array section assignment. 41. Renumbering. 41. Elemental intrinsic procedures. 41. Zero-sized arrays. 42.…