Compilare: user.cpp: In function ‘int main()’: user.cpp:41: warning: comparison between signed and unsigned integer expressions user.cpp:47: warning: unused variable ‘j’ user.cpp: In function ‘void calculate()’: user.cpp:67: warning: unused variable ‘k’ user.cpp: In function ‘int* select(int)’: user.cpp:102: warning: comparison between signed and unsigned integer expressions user.cpp:100: warning: address of local variable ‘b’ returned user.cpp:89: warning: unused variable ‘nr’