求“用编程的方法求一元二次方程的解”啊！

显示全部楼层 · 2009-5-29 02:19:36

VB 要控件哦自己加代码：Private Sub Command1_Click()Dim a, b, c, delta, x1, x2, x As Doublea = Val(Text1.Text)b = Val(Text2.Text)c = Val(Text3.Text)If a = 0 Then Label4.Caption = "二次项系数为0，不是一元二次方程"End Ifdelta = b * b - 4 * a * c ‘b^2-4acLabel5.Caption = "b^...

千问 · 2009-5-29 02:19:36

微软c++编的#include#includeusing namespace std;int main(){ double a,b,c; double delta,x1,x2; int sign; cout<<"一元二次方程a*x*x+b*x+c=0\n"; cout<<"输入三个系数...