Mi a hiba? Sürgős pliz C++

//main.cpp

# include <iostream> //std függvénykönyvtár

# include <stdlib.h> //return EXIT_SUCCESS

# include <windows.h> //Sleep(500),exit(0)

typedef unsigned short ushort;

using std::cout;

using std::cin;

using std::endl;

inline ushort ao1(float p1 = 1);

inline ushort ao2(float p2 = 1);

inline ushort ao3(float p3 = 1);

inline ushort ao4(float p4 = 1);

inline ushort ao5(float p5 = 1);

inline ushort ao6(float p6 = 1);

int main()

{

float xyz = true;

float eredmeny = false;

eredmeny = ao6(ao5(ao4(ao3(ao2(ao1(xyz))))));

cout <<"Eredmeny: "<< eredmeny;

//system("pause > nul");

cin.get();

return EXIT_SUCCESS;

}

inline ushort ao1(float p1 = 1) {return p1*2;}

inline ushort ao2(float p2 = 1) {return p2+2;}

inline ushort ao3(float p3 = 1) {return p3/5;}

inline ushort ao4(float p4 = 1) {return p4%2;}

inline ushort ao5(float p5 = 1) {return p5-10;}

inline ushort ao6(float p6 = 1) {return p6*5;}