题解 | #Fibonacci数列#

#include <stdio.h>

int main()
{
	int n = 0;
	scanf("%d", &n);
	int a = 0;
	int b = 1;
	int c = a + b;
	while (1)
	{
		if (n == b)
		{
			printf("0\n");
			break;
		}
		else if (n < b)
		{
			if (abs(n - a) > abs(n - b))//abs函数是求绝对值的
			{
				printf("%d\n", abs(n - b));
			}
			else
				printf("%d\n", abs(n - a));
			break;
		}
		else
		{
			c = a + b;
			a = b;
			b = c;
			
		}
	}
	return 0;
}