float sy,sx,xa,xb,ya,yb;
    cout << "Zadejte souradnice bodu A v osovem poradi (x,y)" << endl;
    cin >> xa;
    cin >> ya;
    cout << "Zadejte souradnice bodu B v osovem poradi (x,y)" << endl;
    cin >> xb;
    cin >> ya;
    sx=(xa+xb)/2;
    sy=(ya+yb)/2;
     cout << "Souradnice stredu usecky na ose x je " << sx <<endl;
     cout << "Souradnice stredu usecky na ose y je " << sy <<endl;