上传文件至 /

2026-03-20 09:32:14 +08:00
parent 4ae70d5c2e
commit 5d108b8dba
4 changed files with 126 additions and 0 deletions
--- a/javaclass.java
+++ b/javaclass.java
@@ -0,0 +1,40 @@
+import java.util.Scanner;
+import java.lang.Math;
+class EquationRoot
+{
+    public static void main(String[] args)
+    {
+        Scanner scan = new Scanner(System.in);
+        double a,b,c,disc,x1,x2,p,q;
+
+        System.out.print("请输入系数a=");
+        a = scan.nextDouble() ;
+
+        System.out.print("请输入系数b=");
+        b = scan.nextDouble() ;
+
+        System.out.print("请输入系数c=");
+        c = scan.nextDouble() ;
+
+        disc=b*b-4*a*c;
+
+        if ( Math.abs(disc) <= 1e-6 )
+            System.out.println("x1=x2="+(-b/(2*a)));
+        else
+        {
+            if(disc>1e-6)
+            {
+                x1=(-b+Math.sqrt(disc))/(2*a);
+                x2=(-b-Math.sqrt(disc))/(2*a);
+                System.out.printf("x1=%7.2f,x2=%7.2f\n", x1, x2);
+            }
+            else
+            {
+                p=-b/(2*a);
+                q=Math.sqrt(Math.abs(disc))/(2*a);
+                System.out.printf("x1=%7.2f + %7.2f i\n", p, q);
+                System.out.printf("x2=%7.2f - %7.2f i\n", p, q);
+            }
+        }
+    }
+}