题解 | #记负均正II#

#解题思路,使用while和try不定长循环输入,输入之后做判断是负数还是正数,并用全局变量来计数,设置一个num_sum来累加正数,最终用num_sum除以正数的计数得到平均值,要注意除数为0要跳过运算,否则会出错
num_sum = 0
f_c = 0
z_c = 0
while True:
    try:
        input_number =  int(input())
        if input_number < 0:
            f_c += 1
        elif input_number > 0:
            z_c += 1
            num_sum += input_number
        else:
            pass
    except Exception:
        break
if z_c != 0:
    out_put = round((num_sum / z_c), 1)
print(f_c)
if z_c == 0:
    print("0.0")
else:
    print(out_put)