题解 | 统计输入正数个数

import java.util.*;

public class Main {
    public static void main(String[] args) {
        int count = 0;
        Scanner sc = new Scanner(System.in);

        while(sc.hasNextInt()){
            int x  = sc.nextInt();
            if(x>0){
                count++;
            }else if(x<=0){
                break;
               
            }
        }
        System.out.println(count);
        

    }
}

直接用hasNextInt()