Помогите , пожалуйста , решить задачку на плюсах .

Могу решить за 200, если нужно пиши в ЛС

 

#include <iostream>
#include <string>

using std::cin;
using std::cout;
using std::string;

int main()
{
float x = 0, y = 0;
const string MSG_BELONG = "\nthe point with coordinates x, y belongs to the plane\n";
const string MSG_NOT_BELONG = "\nthe point with coordinates x, y does not belongs to the plane\n";
cout << "Enter X: ";
cin >> x;
cout << "Enter Y: ";
cin >> y;
cout << "\n1 option ((x >= -1.0 && x <= 1.0) && (y >= -1.0 && y <= 1.0))";
if ((x >= -1.0 && x <= 1.0) && (y >= -1.0 && y <= 1.0))
{
cout << MSG_BELONG;
}
else
{
cout << MSG_NOT_BELONG;
}
cout << "------------------------------------------\n";
cout << "\n2 option x1^2 + y1^2 < R1 && x2^2 + y2^2 > R2\n";
float radius = x * x + y * y;
if ((radius <= 1.0f) && (radius >= 0.5f))
{
cout << MSG_BELONG;
}
else
{
cout << MSG_NOT_BELONG;
}
cout << "------------------------------------------\n";
cout << "\n3 option x1^2 + y1^2 < R1 && x2^2 + y2^2 > R2 && y >= 0\n";
radius = x * x + y * y;
if ((radius <= 2.0f) && (radius >= 2.5f) && (y >= 0))
{
cout << MSG_BELONG;
}
else
{
cout << MSG_NOT_BELONG;
}
cout << "------------------------------------------\n";
cout << "\n4 option ((x <= -1.0f) || (x >= 1.0f)) && (y >= 1.0)\n";
if (((x <= -1.0f) || (x >= 1.0f)) && (y >= 1.0))
{
cout << MSG_BELONG;
}
else if (((x > -1) && (x <= 0)) && (y >= -1.0 * x))
{
cout << MSG_BELONG;
}
else if (((x > 0) && (x < 1)) && (y >= x))
{
cout << MSG_BELONG;
}
else
{
cout << MSG_NOT_BELONG;
}
cout << "------------------------------------------";
std::getchar();
return 0;
}

C

#include <iostream>

#include <string>



using std::cin;

using std::cout;

using std::string;



int main()

{

    float x = 0, y = 0;

    const string MSG_BELONG = "\nthe point with coordinates x, y belongs to the plane\n";

    const string MSG_NOT_BELONG = "\nthe point with coordinates x, y does not belongs to the plane\n";

    cout << "Enter X: ";

    cin >> x;

    cout << "Enter Y: ";

    cin >> y;

    cout << "\n1 option ((x >= -1.0 && x <= 1.0) && (y >= -1.0 && y <= 1.0))";

    if ((x >= -1.0 && x <= 1.0) && (y >= -1.0 && y <= 1.0))

    {

        cout << MSG_BELONG;

    }

    else

    {

        cout << MSG_NOT_BELONG;

    }

    cout << "------------------------------------------\n";

    cout << "\n2 option x1^2 + y1^2 < R1 && x2^2 + y2^2 > R2\n";

    float radius = x * x + y * y;

    if ((radius <= 1.0f) && (radius >= 0.5f))

    {

        cout << MSG_BELONG;

    }

    else

    {

        cout << MSG_NOT_BELONG;

    }

    cout << "------------------------------------------\n";

    cout << "\n3 option x1^2 + y1^2 < R1 && x2^2 + y2^2 > R2 && y >= 0\n";

    radius = x * x + y * y;

    if ((radius <= 2.0f) && (radius >= 2.5f) && (y >= 0))

    {

        cout << MSG_BELONG;

    }

    else

    {

        cout << MSG_NOT_BELONG;

    }

    cout << "------------------------------------------\n";

    cout << "\n4 option ((x <= -1.0f) || (x >= 1.0f)) && (y >= 1.0)\n";

    if (((x <= -1.0f) || (x >= 1.0f)) && (y >= 1.0))

    {

        cout << MSG_BELONG;

    }

    else if (((x > -1) && (x <= 0)) && (y >= -1.0 * x))

    {

        cout << MSG_BELONG;

    }

    else if (((x > 0) && (x < 1)) && (y >= x))

    {

        cout << MSG_BELONG;

    }

    else

    {

        cout << MSG_NOT_BELONG;

    }

    cout << "------------------------------------------";

    std::getchar();

    return 0;

}