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public class Jb11_WhileTest
{
public static void main(String[] args)
//输出1到100之间里，2的倍数有几个。计数器思想
int x = 1;
int count = 0;
while (x<=100)
if (x%2==0)
count++;
}
x++;
System.out.println("1~100之间2的倍数个数总共是"+count);
