老娘的Java入门啦之——几道杭电上的入门题 1094

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本文详细解析了一道经典的A+B输入输出练习题，题目要求计算一系列整数的总和。通过Java代码示例，展示了如何读取多个测试用例，并计算每个用例中N个整数的总和。适合初学者练习输入输出及基本数学运算。

1094

A+B for Input-Output Practice (VI)

Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 85961 Accepted Submission(s): 57242

Problem Description

Your task is to calculate the sum of some integers.

Input

Input contains multiple test cases, and one case one line. Each case starts with an integer N, and then N integers follow in the same line.

Output

For each test case you should output the sum of N integers in one line, and with one line of output for each line in input.

Sample Input

4 1 2 3 4

5 1 2 3 4 5

Sample Output

Author

lcy

import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        while(s.hasNextInt())
        {
            int n = s.nextInt(), sum = 0;
            for(int i = 1; i <= n; i ++)
            {
                int a = s.nextInt();
                sum += a;
            }
            System.out.println(sum);
        }
    }
}