编译原理中算符优先表的生成，其中包含了每步骤的显示，进栈和出栈的过程都能完整的显示出来，仅供大家学习借鉴-compiler Principle operator of the priority list generation, which contains every step, into stacks and stack up the integrity of the process can show up only to learn from you

1、编写函数，实现顺序栈的各种基本操作（可从上一实验中直接获取）； 2、编写函数，实现运算符的优先级处理； 3、编写函数，实现算术表达式的计算。 -1, write a function, the stack order to achieve a variety of basic operations (directly obtained from previous experiments) 2, write a function to achieve priority handl