输入两个整数a和b，计算[a,b]区间内所有奇数的和并输出，确保结果输出中区间[a,b]中a<b。注意：在同一行输入两个整数，以英文逗号,

来分隔。以下是Python的代码实现：

a, b = map(int, input().split(','))
if a > b:
    print("Error: a should be smaller than b.")
else:
    sum = 0
    for i in range(a, b+1):
        if i % 2 != 0:
            sum += i
    print("The sum of odd numbers in the range [{}, {}] is {}.".format(a, b, sum))

示例输入：`1,10`

示例输出：`The sum of odd numbers in the range [1, 10] is 25.`