(Sum integers) Write a program that passes an unspecified number of integers from command line and displays their total.

当需要编写一个程序来接收命令行输入的一系列整数，并计算它们的总和时，可以使用诸如Python这样的语言。下面是一个简单的Python示例，展示了如何实现这个功能：

import sys

def sum_integers():
    # 获取命令行参数
    numbers = [int(num) for num in sys.argv[1:]]
    
    # 计算总和
    total = sum(numbers)
    
    # 打印结果
    print("给定整数的总和为:", total)

if __name__ == "__main__":
    sum_integers()

在这个程序中：
1. `sys.argv` 是包含所有命令行参数的列表，我们从索引1开始取，因为索引0通常代表程序名。
2. 使用列表推导式将字符串类型的数字转换成整数。
3. `sum()` 函数计算列表中所有元素的总和。
4. 最后，打印出总和。

运行此程序时，在命令行输入如 "python script.py 1 2 3 4"，它会显示 "给定整数的总和为: 10"。

相关问题

By java Write a program that passes an unspecified number of integers from command line and displays their total.

你可以通过创建一个简单的Java程序来实现这个功能。首先，我们需要从命令行获取用户输入的整数，然后计算它们的总和。下面是一个基本示例：

import java.util.Scanner;

public class SumIntegers {
    public static void main(String[] args) {
        if (args.length == 0) {
            System.out.println("Please provide at least one integer as a command-line argument.");
            return;
        }

        int sum = 0;
        for (int i = 0; i < args.length; i++) {
            try {
                // 将字符串转换为整数并累加到sum上
                sum += Integer.parseInt(args[i]);
            } catch (NumberFormatException e) {
                System.out.println("Invalid input! Please enter only integers.");
                return;
            }
        }

        System.out.printf("The total sum of the numbers is: %d\n", sum);
    }
}

在这个程序中，我们首先检查命令行参数的数量是否至少有一个。接着，遍历这些参数，尝试将每个参数解析为整数。如果无法转换成整数（例如，参数包含非数字字符），就捕获`NumberFormatException`并提示错误。最后，显示所有整数的总和。

运行这个程序时，你需要在命令行中提供至少一个整数作为参数，比如 `java SumIntegers 1 2 3 4 5`。

By java in English Write a program that passes an unspecified number of integers from command line and displays their total.

In Java, you can write a program to achieve this by using the `Scanner` class to read input from the command line and a variable to store the sum of the integers. Here's a simple example:

public class SumIntegers {
    public static void main(String[] args) {
        // Create a Scanner object for command-line arguments
        Scanner scanner = new Scanner(System.in);
        
        // Initialize sum to zero
        int sum = 0;
        
        // Prompt user for the number of integers
        System.out.println("Enter the number of integers followed by space-separated values:");
        int count = scanner.nextInt();
        
        // Iterate and add integers to the sum
        for (int i = 0; i < count; i++) {
            sum += scanner.nextInt();
        }
        
        // Display the total
        System.out.printf("The total of %d integers is: %d%n", count, sum);
        
        // Close the scanner
        scanner.close();
    }
}

To run this program, save it as "SumIntegers.java" and then compile and execute it from the command line, providing the desired numbers after the program name, like this:

javac SumIntegers.java
java SumIntegers 5 4 6 3 2

After running, it will display the total sum.