给定一个整数N，编写程序求1！+2！+……+N！

From , 5 Years ago, written in Java, viewed 237 times.

import java.util.Scanner;
 
public class Main {
 
        public static void main(String[] args) {
                Scanner input = new Scanner(System.in);
                int N = input.nextInt();
                long sum = 0, num;
                int i, j;
                
                for(i = 1; i <= N; i++)
                {
                        num = 1;
                        for(j = 1; j <= i; j++)
                        {
                                num = num * j;
                        }
                        sum += num;
                }
                
                System.out.print(sum);
                
                input.close();
        }
}
 
 

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给定一个整数N，编写程序求1！+2！+……+N！

Reply to "给定一个整数N，编写程序求1！+2！+……+N！"