programming C++

Problem 1 You are required to write a C++ program to print the following texts; Hello there! How are you? Welcome back to the C programming lab. All the best in your study. This program should not receive any input from the user. Problem 2 Create a simple program to perform Addition operation. The program will require TWO (2) integers as the input from user. The program should be able to display the correct result. Problem 3 Write a program that will calculate the volume of a box. The user is required to enter 3 values; length, width, height. The formula as follows, volume = length * width * height. The calculation should be made outside of main function. [Hint: Use function]