Introduction - If you have any usage issues, please Google them yourself
Order stacks and stacks of implementation. Is defined as a sequence of stack structure type, which has two fields data and top. data for a one-dimensional array to store the stack elements, DataType is the data type of the stack elements (to be set). top of int type, it ranges 0..sqstack_maxsize-1. top = 0 indicates an empty stack, top = sqstack_maxsize-1 represents the stack is full.