9618 functions,procedures,string functions-recap

Consider the pseudocode:

PROCEDURE Calculate(x, y)

CALL Calculate(5, 10)

CALL Calculate(3, 4).

How many times is the procedure 'Calculate' called?

• 1
• 2
• 3
• 4

Which parameter passing method allows modification of the original variable?

• By Value (BYVAL)
• By Reference (BYREF)
• By Copy
• By Constant

Evaluate the expression: MID('Hello World', 7, 5). What is the result?

• 'World'
• 'Hello'
• 'Worl'
• 'ello'

What is the key difference between procedures and functions?

• Functions can only have one parameter
• Procedures return values, functions do not
• Functions return values, procedures do not
• Procedures are faster than functions

In the expression RIGHT('ABCDEFGH', 3), what is returned?

• 'ABC'
• 'FGH'
• 'CDE'
• 'EFG'

What is the result of the expression INT(27.5415)?

• 28
• 27.5
• 27
• 27.54

What would the expression LENGTH(UCASE('Hi') & LCASE('BYE')) return?

• 5
• 6
• 7
• 8

Which string function would you use to extract a substring from a given position?

• LEFT
• RIGHT
• MID
• LENGTH

In the pseudocode FUNCTION Max(a, b) RETURNS INTEGER, what is the purpose of the RETURNS keyword?

• To define the function's parameters
• To specify the data type of the function's return value
• To call the function
• To declare a variable

What would be the output of the expression RIGHT(LEFT('COMPUTER', 4), 2)?

• 'CO'
• 'MP'
• 'PU'
• 'ER'