庚武讲堂

#include <iostream>#include <cmath>#include <cstdlib>#include <cstdio>using namespace std;double arctan(double x);inline double getItem(double x,int i);int main(int argc, char *argv[]){ bool b1,b2,b3; cout <<"test 1E-15:"<< 1E-15<<endl; cout <&l Read More