求助:字符串(表达式)怎么转换成数学表达式?
月光易水 2002-12-13 09:34:46 各位仁兄,小生初次求助,帮帮忙,分不够可以加 :_)
例:
<%
n0 = 10
n1 = 1
n2 = 20
n3 = 3
n4 = 4
n5 = 5
n6 = "n1+n2"
n7 = "n6+n3"
n8 = 8
n9 = "n1+(n6*(n7-n5))+n2/((n8-n3)/n4+n0)"
' n9 = ?
%>
说明:
1. n6,n7,n9可都是字符串,n6,n7,n9的这个公式可以由用户随意定义的
2. 暂定用户只可以使用数学符号: "+","-","*","/","%/","(",")"
3. 用vb或asp实现