#include<stdio.h> int main() { int i=1,n; double t,x=1,y=2,s,sum=0; scanf("%ld",&n); while(i<=n) { s=y/x; sum=sum+s; t=y; y=y+x; x=t; i++; } printf("%.2f\n",sum); return 0; }
Double click to view unformatted code.