c语言实践 1/1+1/2+1/3+1/4+...+1/n

给定一个n求这个分式的和。

	int n = 1;
	float sum = 0;
	float frac = 0;
	int i = 1;

	scanf_s("%d",&n);

	while (i <( n + 1))  //1到n
	{
		frac = 1.0 / i;
		sum = sum + frac;
		i++;
	}
	printf("sum is %f",sum);