(please slove all questions )c++

Hello dear, I now have a very important test, and I need to answer in a short time, less than an hour And if you give me the answer within the specified time, I will like you on your answer and invite my colleagues also and thank you

Question 3: Write a C program that reads sequence of non-zero integer numbers from the keyboard and find the greatest of them. Hint: use a sentinel value of zero to indicate the desire of the user to stop entering additional numbers. Question 4: Write a loop program to display the multiplication table of the entered number. For example: Please enter a number to display its multiplication table: 5 51=552=10512=60