#include<stdio.h>
#include<stdlib.h>
double fx(double x, double y)
{
return(y - 2 * x / y);
}
int main() {
double x1, y1;
double x0, y0, h;
int N;
printf("请输入x0,y0,h,N:");
scanf_s("%lf%lf%lf%d", &x0, &y0, &h, &N);
//printf("%lf%lf%lf%d", x0, y0, h, N);
for (int i = 0; i < N; i++) {
x1 = x0 + h;
y1 = y0+h*fx(x0,y0);
printf("%lf\t%lf\n", x1, y1);
x0 = x1;
y0 = y1;
}
system("pause");
return 0;
}