随机产生若干个0~100的随机数，从键盘输入待输入的随机数的个数，并求和、平均值、最大值、最小值、并统计小于60的随机数的个数,如果结果为小数，要求小数点后面保留两位有效数字。-Randomly generating a plurality of random numbers of 0 to 100, to be entered from the keyboard to enter the number of the random number, and sum, average, maximum, minimum, and counts the number of the random number less than 60, if the result decimal, the decimal point behind two significant figures reserved.