通过函数求f(x)的累加和，其中f（x）＝x*x＋1#include int F(int x){return_______;}int SunFun(int n){ int x,s=0;for(x=0;x<=n;x++)s+=F(______);return s;}int main(){ printf("sum=%d\n",SunFun(10));}