标题: 从一到x的和，打包 [打印本页] 作者: 秦文强 时间: 2015-1-23 22:47 标题: 从一到x的和，打包 import java.util.Scanner;
class For
{
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
System.out.println("请输入数据");
int number = sc.nextInt();
int sum=0;
for (int x=1;x <= number ;x++ )
{
sum += x;
}
System.out.println(sum);