基于MFC界面设计，可以摆脱单纯的黑色背景DOS操作框-Based the MFC interface design, you can get rid of a pure black background DOS operating box

c语言编写的dos界面下的计算器，支持加减乘除括号等简单运算，代码清晰注释丰富，可作为新手学习栈的使用-c language calculator dos interface, support brackets and other simple arithmetic operations, code clear notes and rich, as a novice to learn the use of the stack