Can someone help me with this by using cpp, I need to make it works with at least 2 digits number. thank you so much

2. (35 marks) Write a program that takes an arithmetic expression as a string and returns its value. For example, if the user enters "5*3+2+4" then the program should return 21. Assume that the user enters a valid expression. The program should handle the following arithmetic operators *, +,/,-. Bonus (20 points): Add the ability to handle parentheses. In this question use a null terminated character array to represent a string, you cannot use the class string