Function not returning correct value

[petrmsofuse]

I have a structure containing string, int and double. My function takes four doubles and compares it to the double from structure. But it's returning wrong value, (always true), and when I try to print out the double from structure in main prints out some kind of address.
part of header file:

  struct aut{
    std::string reg;
    double dom;
    int bropu;

    aut();
    aut(std::string reg, double dom, int broput);

    bool distance(double x1, double y1, double x2, double y2); };

declaration of function:

double aut::distance(double x1, double y1, double x2, double y2){
    double dx = x1 - x2, dy = y1 - y2;
    double distance= sqrt(dx * dx + dy * dy);
  return(distance < dom)
  };

main:

int main(void) {

aut a1("first", 500.0, 6);
cout << a1.distance(10.0, 10.0, 20.0, 20.0) << endl;

Thank you!

[seeplus]

What is the body of the constructor? Does it set dom properly?

Also note that the declaration returns a bool, but the definition returns a double!

Perhaps:

#include <string>
#include <iostream>
#include <cmath>

struct aut {
	std::string reg;
	double dom {};
	int bropu {};

	aut() {}
	aut(const std::string& r, double d, int b) : reg(r), dom(d), bropu(b) {}

	bool distance(double x1, double y1, double x2, double y2);
};

bool aut::distance(double x1, double y1, double x2, double y2) {
	const double dx = x1 - x2, dy = y1 - y2;
	const double distance = std::sqrt(dx * dx + dy * dy);

	return distance < dom;
};

int main()
{
	aut a1("first", 5.0, 6);

	std::cout << a1.distance(10.0, 10.0, 20.0, 20.0) << '\n';
}

[petrmsofuse]

sorry, bool and double switch is mistake I left double when I tried testing if function would printing correct dom, if I set return dom.
constructor for structure:

aut::aut(string reg, double dom, int bropu) {
string reg1;
reg1 = reg;
double dom1;
dom1 = dom;
int bropu1;
bropu1=bropu;

};

when I try to print out dom and other elements of structure inside the constructor, it prints out correct, but not in main.

[seeplus]

The constructor is wrong. See mine above.

[petrmsofuse]

Thank you very much!