计算三角形周长
package zzz;
import javax.swing.JOptionPane;
public class llyytt {
public static void main(String[] args) {
// TODO Auto-generated method stub
// String [] aa;
String aa=JOptionPane.showInputDialog(null,"Input a number","梁燕婷",JOptionPane.QUESTION_MESSAGE);
int aa1=Integer.parseInt(aa);
String bb=JOptionPane.showInputDialog(null,"Input a number","梁燕婷",JOptionPane.QUESTION_MESSAGE);
int bb1=Integer.parseInt(bb);
String cc=JOptionPane.showInputDialog(null,"Input a number","梁燕婷",JOptionPane.QUESTION_MESSAGE);
int cc1=Integer.parseInt(cc);
if(aa1+bb1
JOptionPane.showMessageDialog(null,"ERROR!!!","梁燕婷",JOptionPane.QUESTION_MESSAGE );
else
JOptionPane.showMessageDialog(null,aa1+bb1+cc1,"梁燕婷",JOptionPane.QUESTION_MESSAGE );
}
}