Problem-solving questions 1. Write a program in C++ to display the cube of the number up to the given an integer. Then modify your program using the other two loop structures. 2. Write C++ program to display value of factorial for certain integer. 3. Write C++ program to produce and display Fibonacci series of number. 4. Write a program in C++ to find the frequency of each digit in a given integer [Nested Loop). 5. Write C++ program that will prompt mark for 50 students for 3 different courses. Your program should be able to display highest and average mark for each course [Nested Loop)