Compilare: user.cpp: In function ‘int main()’: user.cpp:18: warning: unused variable ‘x’ user.cpp: In function ‘void calculeaza(int)’: user.cpp:63: warning: unused variable ‘i’ user.cpp: In function ‘long int produs(int)’: user.cpp:124: warning: ‘nr’ may be used uninitialized in this function user.cpp: In function ‘long int adunare(int)’: user.cpp:93: warning: ‘nr’ may be used uninitialized in this function