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C isalpha() The isalpha() function checks whether a character is an alphabet or not. In C programming, isalpha() function checks whether a character is an alphabet (a to z and A-Z) or not. If a character passed to isalpha() is an alphabet, it returns a non-zero integer, if not it returns 0.
equals() is a method of all Java Objects. But char is not an Object type in Java, it is a primitive type, it does not have any method or properties, so to check equality they can just use the == equals operator.
Python String isdigit() The isdigit() method returns True if all characters in a string are digits. If not, it returns False .
To check whether the entered value is a letter or not in Java, use the Character. isLetter() method.
What are the Rust equivalents to C's isalpha, isdigit and isalnum?
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