两数相加问题 A + B Problem

A + B Problem

题目——来自hdoj

Problem Description Calculate A + B.

Input Each line will contain two integers A and B. Process to end of
file.

Output For each case, output A + B in one line.

Sample Input 1 1

Sample Output 2

Author HDOJ

分析

程序

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNextInt()) {
            int a = sc.nextInt();
            int b = 0;
            if (sc.hasNextInt()) b = sc.nextInt();
            System.out.println(a + b);
        }
    }
}