C++费波那契数列的项

 

void 费波那契数列的项(int ci) {//缘由https://bbs.csdn.net/topics/394918337 double aa = 0; unsigned long long bb = 1, dd = 0; while (ci--)aa += 1.0 / bb, dd = bb - dd, bb += dd; cout << aa << " bb " << bb << " dd " << dd << endl; }