这是我发现的一个编码挑战网站的问题。这是我的代码:
我需要做什么或改变什么来获得想要的输出。
import java.util.Scanner;
public class CopyOfInputLoop {
public static void main (String[] args) {
Scanner scan = new Scanner(System.in);
System.out.println ("Enter an integer to continue or a non-integer value to finish. Then press return.");
//placeholder variables that change as user inputs values
int attempts = 0;
int values = 0;
int total = 0;
//adds the values input by the user and continues asking for an integer if another integer is input
while (scan.hasNextInt()) {
total += values;
values = scan.nextInt();
System.out.println("Enter an integer to continue or a non-integer value to finish. Then press return.");
attempts += 1;
}
//ends the program when a non-integer is input and prints the number of attempts and the sum of all values
String input = scan.next();
System.out.println ("You entered " + input + "!");
System.out.println ("You had " + attempts + " attempts!");
System.out.println("The sum of all your values is " + total);
}
}
试试这个。
import java.util.Scanner;
class Main {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
System.out.println ("Enter an integer to continue or a non-integer value to finish. Then press return.");
//placeholder variables that change as user inputs values
int attempts = 0;
String value;
int total = 0;
//adds the values input by the user and continues asking for an integer if another integer is input
for (;;) {
value = scan.next();
try {
total += Integer.valueOf(value);
attempts++;
System.out.println ("Enter an integer to continue or a non-integer value to finish. Then press return.");
}
//ends the program when a non-integer is input and prints the number of attempts and the sum of all values
catch (Exception e) {
attempts++;
System.out.println ("You entered " + value + "!");
System.out.println ("You had " + attempts + " attempts!");
System.out.println("The sum of all your values is " + total + "!");
break;
}
}
scan.close();
}
}
