#ifndef STACK_H
#define STACK_H

// Push an 'item' onto the stack.
// Parameters:
//   stack - A pointer to an array use to store items in the stack.
//   top   - A pointer to an integer that gives the index of the top of the stack.
//   size  - The size of the stack.
void stack_push(double* stack, int* top, int size, double item);

// Pop an 'item' from the stack.
// Parameters:
//   stack - A pointer to an array use to store items in the stack.
//   top   - A pointer to an integer that gives the index of the top of the stack.
double stack_pop(double* stack, int* top);

// Remove all items from the stack.
// Parameters:
//   stack - A pointer to an array use to store items in the stack.
//   top   - A pointer to an integer that gives the index of the top of the stack.
//   size  - The size of the stack.
void stack_clear(double* stack, int* top, int size);

// Print out all items in the stack.
// Parameters:
//   stack - A pointer to an array use to store items in the stack.
//   top   - A pointer to an integer that gives the index of the top of the stack.
void stack_print(double* stack, int* top);

#endif