Eroare de compilare: user.cpp: In function 'int main()': user.cpp:10: warning: format '%ld' expects type 'long int*', but argument 3 has type 'long int' user.cpp:10: warning: format '%ld' expects type 'long int*', but argument 4 has type 'long int' user.cpp:16: error: 'abs' was not declared in this scope user.cpp:22: error: 'abs' was not declared in this scope user.cpp:26: error: 'abs' was not declared in this scope user.cpp:33: error: 'abs' was not declared in this scope