java.入门

public static void main(String[] args) {
  //long 长整数型
  long cash = 100000000000L;

  //整数变量，计算器
  int count = 0;

  //while语句
  while (cash > 1) {

   cash = cash / 2;
   count = count + 1;
  }
  System.out.println("count = " + count);
 }
}