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# isalpha

Example: isalpha | Character Classification and Conversion Functions

Checks if an integer value is a alphabetic letter.

    int isalpha( int c);

c | The string to check.

The function isalpha checks to see if the value of c falls within the ranges A - Z or a - z.

## Return Values

This function returns a non-zero value (true) if the character is a letter, zero (false) if it is not.

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