四阶亚当姆斯预报-校正系统

#include <iostream>
#include <array>
#include <vector>
using namespace std;

double f(double x, double y){
   
   
    return y - (2 * x / y);
}

int main(int argc, const char * argv[]) {
   
   
    double a, b, n, alpha;
    cout<<"请输入待估区间[a,b],步数n，初值条件y0"<<endl;
    cin>>a>>b>>n>>alpha;
    
    array<double, 5> xi;
    array<double, 5> yi;
    array<double, 5> fi;
    
    double h = (b-a)/</