C++ programmers!! HELP!!!

[rishiprsd]

These are related to my practicals that are going to happen day after tomorrow...I cannot prepare sufficiently as my physics practicals come the day after...I have managed to get the list of questions for my final exam...but I need more hands...I am solving some as I type this...please help me out...

https://docs.google.com/file/d/1PqlGZqugHOHntpCv10vrV2JZEvIo5qbiJ7W46JyuXi4v0m2AM6o3Q_mcSqVw/edit?usp=sharing

here's the link to the list of questions!
All help is appreciated!