HDU 1170 JAVA

package hlh;

import java.util.Scanner;

public class p1170 {

/**
* @author 胡龙华
*/
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int t = sc.nextInt();
while(t-->0){
String s = sc.next();
int num1 = sc.nextInt();
int num2 = sc.nextInt();
// +,-,*, /
double res =0;
if(s.equals("+")){
res = num1 + num2;
}
if(s.equals("-")){
res = num1 - num2;
}
if(s.equals("*")){
res = num1 * num2;
}
if(s.equals("/")){
res = 1.0*num1 / num2;
}
if(res-(int)res<0.00000001){
System.out.println((int)res);
continue;
}
System.out.println(String.format("%.2f", res));

}

}

}