1. Introduce a call-by-value function that computes the volume of a box. Hint: Length, width, and height of a box is needed. 2. Introduce a call-by-reference function with void output, that computes the square of an integer, Please double check the value of the function input before and after function call. 3. Introduce a call-by-pointer function with void output. that computes the square of an integer. Please double check the value of the function input before and after function call. 4. Introduce an integer vector. Then introduce a function to reverse this vector. (Do not use reverse library provided by C++ 5. Introduce an integer vector. Then introduce a function to check whether this vector is palindrome. If yes, please return true. If not, please return false. 6. Read/run the following code and see whether you can interpret/understand the results Demo how to use debugger to see the result int a = 5; //assume thata is located at 1000 a's pointer is located at seee int &b = a; a 10; cout