A question about the GUI

冷夜星光

#include "Cartesian System.h"
#include "cmath"

using namespace std;

double f (double x);
double g (double x);

int main ()
{
Cartesian System grid;

return 0;
}

double f (double x)
{
return x * sin (x);
}

double g (double x)
{
return x;
}

#include "Cartesian System.h"
Compiling, error is not opening #include "Cartesian System.h"
Why?
Thank you!

verance

Cartesian System.h is not something that exists in the C ++ standard library, make sure the compiler search path has this
The path where the file is located, or you #include it's absolute path

boxer2005

1.Cartesian System.h
2.Cartesian System grid;

冷夜星光

Seems like that, Cartesian System.h can't be found online,
Thank you! ...