public class Demo05ShiCao{
public static void main(String[] args){
int sum1 = 0;
for(int i = 1; i <= 100; i++){
if(i % 2 == 0){
sum1 +=i;
}
}
System.out.println("结果是:" + sum1);
System.out.println("==============================================");
int sum2 = 0;
int c = 1;
while(c <= 100){
c++;
if(c % 2 == 0){
sum2 += c;
}
}
System.out.println("结果是:"+sum2);
System.out.println("==============================================");
int sum3 = 0;
int d = 100;
do{
if(d % 2 == 0){
int f;
sum2 += f;
}
d++;
}while(d <= 100);
System.out.println("结果是:"+sum3);
}
拿走不谢