1. Answer the following questions. a) Write declaration for a stack implementation array that store student names. The size of the array is 10 . Declare an instance of stack using variable astack. b) Write a push () operation that will insert string value to the stack. c) Write a pop () operation that will delete an item from the top stack. d) Write a source codes that will print the value at the top of the stack. If the stack is empty, write an appropriate message