任务021描述
用Python编写一个程序，判断输入的数字是奇数还是偶数，并相应的输出信息。
分析及示例
要判断一个数为奇数还是偶数，依据的是它被2除后的余数。因此可以用“%”运算符来计算并判断。
示例代码：
def judgeOdd(num):
if num %2 >0:
return '%i is an odd number.'%num
else:
return '%i is an even number.'%num
for i in range(-3,11):
print(judgeOdd(i))
运行结果：
-3 is an odd number.
-2 is an even number.
-1 is an odd number.
0 is an even number.
1 is an odd number.
2 is an even number.
3 is an odd number.
4 is an even number.
5 is an odd number.
6 is an even number.
7 is an odd number.
8 is an even number.
9 is an odd number.
10 is an even number.
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