用C写的表达式计算器，不但可以完成四则运算，还可以处理一些函数运算，可以配合graphviz画出表达式树和计算过程。...

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用C写的表达式计算器，不但可以完成四则运算，还可以处理一些函数运算，可以配合graphviz画出表达式树和计算过程。-Written using C expression calculator, not only can complete the four operations, but also can deal with a number of functions computing, you can tie in with graphviz to draw the expression tree and calculation process.