整数1到100的和

package 猜数字游戏;
import java.util.Scanner;
public class 猜数字 {
//1到100整数的和
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
/* Scanner sc= new Scanner (System.in);
int sum=0;
int i;
for(i=1;i<=100;i++)
{
sum+=i;
}
System.out.println("1~100整数的和是："+sum);
}*/
/*Scanner sc= new Scanner (System.in);
int sum=0;
int i=1;
for(;;)
{
sum+=i;
i++;
if (i>100)
break;
}

System.out.println("1~100整数的和是："+sum);*/

/*Scanner sc= new Scanner (System.in);
int sum=0;
int i=1;
while(i<=100)
{
sum+=i;
i++;
}
System.out.println("1~100整数的和是："+sum);
*/

}

}