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 Tiêu đề: Java 9-10-09 - Chuong Trinh Xuat Tam Giac  9/11/2009, 8:26 am |
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/* BT : Viet chuong trinh KiemTra.java thuc hien nhap vao 3 kich thuoc a,b,c
+ Kiem tra a ,b ,c co the la 3 canh tao giac hay ko ?
+ Trong truong hop la 3 canh tam giac . Hay tinh dien tich
tam giac va xuat ra nhan xet tam giac do co phai la tao giac vuong hay khong
*/
import java.util.Scanner;
public class KiemTra{
public static void main(String[] args){
int a,b,c;
Scanner scan = new Scanner(System.in);
System.out.println("Nhap vao canh a: ");
a = scan.nextInt();
System.out.println("Nhap vao canh b : ");
b = scan.nextInt();
System.out.println("Nhap vao canh c : ");
c = scan.nextInt();
double p = (a+b+c)/2.0;
if((a+b)>c && (a+c)>b && (b+c)>a){
System.out.println("Day la Tam Giac");
}
else{
System.out.println("Khong phai la 3 canh tam giac");
}
double DT = Math.sqrt(p*(p-a)*(p-b)*(p-c));
System.out.println("Dien tich tam giac = " +DT);
if(a*a == (b*b + c*c)){
System.out.println("Tam giac vuong tai A");
}
else if(b*b == (a*a + c*c)){
System.out.println("Tam giac vuong tai B");
}
else if(c*c == (a*a + b*b)){
System.out.println("Tam giac vuong tai C");
}
else{
System.out.println("Khong phai la Tam Giac Vuong");
}
}
}
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