VB小软件编写的问题

答案补充 对输入的abc进行判断 将以下代码p = b ^ 2 - 4 * a * cd = (-b + Sqr(p)) / (2 * a)s = (-b - Sqr(p)) / (2 * a)Print "x1="; dPrint "x2="; sElsePrint "方程无解"End IfEnd Sub改成p = b ^ 2 - 4 * a * cif p>0 thend = (-b + Sqr(p)) / (2 * a)s = (-b - Sqr(p)) / (2 * a)Print "x1="; dPrint "x2="; selsePrint "方程无解"end ifend if ||| 对输入的值先做一个判断 再计算