A factory produces food items. The items must be used within a certain number of days after their production date. The number of days is known as the shelf life. It is different for each type of item but is always a whole number in the range 1 to 21 (inclusive). The latest date that an item can be used is called the 'use-by' date. A program is needed to produce labels which show the 'use-by' date. Part of the program is a function GetDate() which will: • take two parameters: a production date and a value representing the shelf life • return the corresponding ‘use-by' date. The program contains a global 1D array DaysInMonth of type integer which stores the number of days in each month (index 1 is January): Index | Value ---|--- 1 | 31 2 | 28 3 | 31 4 | 30 11 | 30 12 | 31 Note: Leap years are not considered

1. (a)An algorithm uses the array DaysInMonth to calculate a 'use-by' date. An alternative design would involve the use of multiple selection statements. An array-based technique is often used when there is a large number of different values to check and where no pattern exists. One advantage of using an array-based technique is the speed of execution compared to the use of multiple selection statements. Give two other advantages of using an array for this type of operation rather than a solution based on multiple selection statements. 1 2[2]
2. (b)Complete the pseudocode for the function GetDate(). Date functions from the insert should be used in your solution. FUNCTION GetDate(ProductionDate : DATE, ShelfLife : INTEGER) RETURNS DATE ENDFUNCTION[7]