TREEBINA

  计算器程序。 能够显示计算优先级的二叉树。 可以任意加括号。 可进行+_*/％运算，及sin,cos,tan,cot,^,ln,e^,a^运算。 运行于TC2.0。要求正确配置图形驱动程序。(calculator program. Calculated to demonstrate the priority of binary tree. Can be arbitrary bracketed. Can be _* /% Operational and sin, cos, tan, cot, ^, ln, e ^ a ^ operator. Running TC. It demands the right graphics drivers.)