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What is is_alphanum(c) in Fortran?

Adnan Abbas

Grokking Modern System Design Interview for Engineers & Managers

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is_alphanum(c) is a public pure function in the stdlib_ascii module. The stdlib_ascii module provides methods to manipulate and handle intrinsic character variables and constants.

The is_alphanum function checks whether its argument is a letter (a…z, A…Z) or a number (0…9).

Syntax

public pure function is_alphanum(c)

Function parameter(s)

c is the character to test.

Return value

This function returns a logical value.

It will return true if the character is an alphanumeric character and false otherwise.

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fortran
communitycreator

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

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