CodeList_6_Java.java

Scanner scanner = new Scanner( System.in );
boolean isTriangle = true;
char OK = 'Y';
float a,b,c;
do
    {
        System.out.print("Nhap a = ");
        a =  Float.parseFloat(scanner.nextLine() );
        System.out.print("Nhap b = ");
        b = Float.parseFloat(scanner.nextLine() );
        System.out.print("Nhap c = ");
        c = Float.parseFloat(scanner.nextLine() );
        if(a<=0 || b<=0 || c<=0)
           isTriangle = false;
         if((a + b <= c) || (a + c <= b) || (b + c <= a))
           isTriangle = false;
         if(isTriangle)
           System.out.print("Day la tam giac");
          else
           System.out.print("Day khong phai la tam giac");
          isTriangle = true;
          System.out.print("Ban muon tiep tuc khong?(Y/N)");
          OK = scanner.nextLine().charAt(0);
       } while(OK != 'N');