class Leijia
{
public static void main(String[] args)
{ int sum=0,i;
for(i=1;i<=100;i++)
sum=sum+i;
System.out.println("1到100的累加和为:"+sum);
}
}
int sum=0;
for(int i=1;i<=100;i++){
sum=sum+i;
}
int sum = 0;
for (int i=0;i<=100;i++){
sum+=i;
}
System.out.println(sum);