XTU OJ 1079 数学计算1

#include<stdio.h>
int main()
{
	double a,b,c,d;
	d = 5.0;
	c = 1 + 1/d;        
	b = 1 + 1/c;          
	a = 1 + 1/b;
	printf("%g\n",a);    
	return 0;       
}