c++课程设计简易计算器可以实现数字的加、减、乘、除、正/负数、小数点；三角函数的运算（sin,cos,tan）；数字的开方、阶乘、倒数运算；幂函数的运算；同或、异或、与、求余运算；清零、删除功能；

-c++ curriculum design simple calculator can be achieved (1) numbers to add, subtract, multiply, divide, positive/negative, decimal point　(2) trigonometric operations (sin, cos, tan)　(3) number of prescribing, factorial, reciprocal operation　(4) power function operation　(5) with OR, XOR, AND, the remainder operator　(6) is cleared, the delete function