out

C语言表达式语法分析器

=,2.00, ,f
=,3.00, ,i
*,2.00,f,t1
*,t1,i,t2
*,3.00,f,t3
*,t3,i,t4
+,2.00,t4,t5
/,3.00,t6,t7
+,t2,t7,t8
=,t9, ,z