A repair company has observed that the number of repeat repairs have increased. To reduce the number of mistakes when fixing a product, the company has contracted you to come up with a program that can trace the disassembly steps of a product so that the re-assembly can be output. To do this, you will write a program that uses a stack. Each disassembly step is pushed onto the stack. When it is time to re-assemble the product, the stack can be popped until no items are remaining. There may be some disassembly steps that do not have a one-to-one mapping with an assembly step. For these cases, use an enumerated type to indicate if the step is optional or required. Data Format enum priority { OPTIONAL, REQUIRED }; typedef struct { char *desc; enum priority p; } instruction; Other Requirements • When printing the assembly, print only steps that are required. • Each instruction should be a node in a linked list-based stack. • Nodes should be managed using dynamic memory allocation. Example Run # Add step 1. Add step 2. Undo step 3. Assemble 4. Quit > 1 Description: clean surface Priority (0, 1): 0 # Undo step 1. Add step 2. Undo step 3. Assemble 4. Quit > 2 Step "take front cover off" removed. # Print disassembly 1. Add step 2. Undo step 3. Assemble 4. Quit > 3 1) remove battery 2) take front cover off