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Copy pathex82.py
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'''
八进制转换为十进制
'''
defoct2dec(num_string, flag=1):
s=0
ifflag==1:
foriinrange(len(num_string)):
s+=float(num_string[-i-1])*8**i
elifflag==-1:
foriinrange(len(num_string)):
s+=float(num_string[i])*8**(-i-1)
returns
octal_num=input("输入一个八进制数：")
s=0
minus=-1
ifoctal_num[0] =="-":
octal_num=octal_num.replace("-", "")
minus=1
if"."inoctal_num:
str_list=octal_num.split(".")
result=oct2dec(str_list[0]) +oct2dec(str_list[1], flag=-1)
else:
result=oct2dec(octal_num)
print(-minus*result)