Pseudocode for Validating a Name

Function Overview

The purpose of this function is to validate if a given name consists solely of alphabetic characters. It returns:

• 1 if the name is valid (contains only letters).
• 0 if the name is invalid (contains any non-letter characters).

Pseudocode

FUNCTION isValidName(name: STRING) RETURNS INTEGER
    // Loop through each character in the name
    FOR i FROM 0 TO length of name - 1 DO
        // Check if the current character is not an alphabetic letter
        IF NOT isAlphabetic(name[i]) THEN
            RETURN 0  // Name is invalid
        END IF
    END FOR
    
    RETURN 1  // Name is valid
END FUNCTION

FUNCTION isAlphabetic(char: CHAR) RETURNS BOOLEAN
    // Check if character is between 'A' and 'Z' or 'a' and 'z'
    IF (char >= 'A' AND char <= 'Z') OR (char >= 'a' AND char <= 'z') THEN
        RETURN TRUE  // Character is alphabetic
    ELSE
        RETURN FALSE // Character is not alphabetic
    END IF
END FUNCTION

Explanation of Pseudocode

1. Function Definition

• isValidName(name: STRING): This function takes a string input name.

2. Loop through Characters

• A FOR loop iterates through each character of the string name.

3. Character Validation

• The function checks if the current character is not alphabetic by calling isAlphabetic().
• If the character is found to be non-alphabetic, the function returns 0, indicating an invalid name.

4. Valid Name Confirmation

• If all characters are validated successfully, the function returns 1, indicating a valid name.

5. Helper Function

• isAlphabetic(char: CHAR): This auxiliary function determines if a character is alphabetic by checking its ASCII value range.

Conclusion

This pseudocode provides a clear and structured approach to validating a name based on the parameters defined in the original C function, translating the logic into a format suitable for documentation and comprehension in development processes.