Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:37: error: ‘sort’ was not declared in this scope user.cpp:38: warning: comparison between signed and unsigned integer expressions user.cpp:41: warning: unused variable ‘j’ user.cpp: In function ‘void calculate()’: user.cpp:61: warning: unused variable ‘k’ user.cpp: In function ‘int* select(int)’: user.cpp:92: error: ‘sort’ was not declared in this scope user.cpp:95: warning: comparison between signed and unsigned integer expressions user.cpp:93: warning: address of local variable ‘b’ returned user.cpp:82: warning: unused variable ‘nr’ user.cpp: In function ‘int solve(int*)’: user.cpp:180: error: ‘abs’ was not declared in this scope