View Code of Problem 48

#include<stdio.h>
int main()
{
	double a[10], b[10], c[10], sum;
	int n, i, j;
	scanf("%d", &n);
	sum = 0;
	a[0] = 2;
	a[1] = 3;
	b[0] = 1;
	b[1] = 2;
	for (i = 2; i < 10; i++)
	{
		a[i] = a[i - 1] + a[i - 2];
	    b[i] = b[i - 1] + b[i - 2];
	}
	for (i = 0; i < 10; i++)
		c[i] = a[i] / b[i];
	for (i = 0; i < n; i++)
		sum = sum + c[i];
	printf("%.6f", sum);

	return 0;
}