C语言程序设计教程（第三版）课后习题6.8 （C语言代码）

参考代码:

int n;
float child = 2.0, mother = 1.0;
float sum;
scanf("%d", &n);
for(int i = 1; i <= n; i++) {
   sum += child / mother;
   int temp = child;
   child += mother;
   mother = temp;
}
printf("%.2f",sum);
return 0;