该计算器基于C语言编写，使用了栈。具有加减乘除，还有进制转换的功能，有小括号，中括号，大括号的区别，有检错功能。-The calculator based on C language, using the stack. With add, subtract, multiply and divide, and hexadecimal conversion functions, are parentheses, brackets, the difference between braces, wit