C语言用for循环打印1/1-1/2+1/3-1/4+1/5 …… + 1/99 - 1/100 的值，打印出结果

#inxlude
int main()
{
	int a = 0;
	int b = 0;
	double sum1 = 0;
	double sum2 = 0;
	for (a = 1; a <= 99; a += 2)
	{
		sum1 += 1.0 / a;
	}
	for (b = 2; b <= 100; b += 2)
	{
		sum2 += 1.0 / b;
	}
	printf("%lf", sum1 - sum2);
	return 0;
}