prog.cpp: In function 'int main()': prog.cpp:17:20: error: call of overloaded 'sum(int, int)' is ambiguous cout << sum(10, 15) << endl; ^ prog.cpp:6:5: note: candidate: int sum(int, int, int, int) int...prog.cpp: In function 'int main()': prog.cpp:17:20: error: call of overloaded 'sum(int, int)' is ambiguous cout << sum(10, 15) << endl; ^ prog.cpp:6:5: note: candidate: int sum(int, int, int, int) int sum(int x, int y, int z=0, int w=0) ^ prog.cpp:10:5: note: candidate: int sum(int, int, float, float) int sum(int x, int y, float z=0, float w=0) ^
