我是个C语言的初学者，于是就用C写了个基于命令行的计算器程序，主要是利用“栈”来实现加减乘除及括号之间的优先级问题，程序还不完善，希望大家多提意见。-I am a C language for beginners, so he wrote a used C-based command line calculator program, mainly the use of " stack"　to achieve the addition, subtraction and priority issues between the brackets, the program is not perfect, I hope you speak up.