Simple date calculator (C++)

** SUMMARY ** I need some C++ source code that will allow me to add or subtract a number of days to a given date, and return the correct date. The function will look like this: date_adjust(int day, int month, int year, int numDays, bool workDays) ** HOW IT SHOULD WORK ** You feed the function the day (1-31), the month (1-12), and the year (eg. 2019), numDays (how many days to subtract or add -999999 to 999999 etc), and a boolean workDays (0= seven day week, 1= five day week meaning that if add a value of +1 day to Friday it would return the following Monday) The function will return a struct containing the calculated integer day, month and year values. The code must be easy to just copy and paste into C++ and work using existing libraries, and the code should also be extremely efficient (no excessive/unnecessary code, loops or if statements) ** CONDITIONS OF THE PROJECT ** * The maximum payout for this project is AUD$50 (no negotiations) * The milestone will only be released after I have received the readable code and it has been tested and deemed working by myself to a satisfactory level. * To prove that you have read this project outline, please only bid exactly AUD$50 and mention my name 'Alex' at the top of your message. Thank you for reading.