Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:9: warning: unused variable ‘a’ user.cpp:9: warning: unused variable ‘i’ user.cpp:9: warning: unused variable ‘j’ user.cpp:9: warning: unused variable ‘x’ user.cpp: In function ‘int recurenta(int, int)’: user.cpp:21: error: ‘v’ was not declared in this scope user.cpp:22: error: ‘i’ was not declared in this scope user.cpp:24: error: ‘b’ was not declared in this scope user.cpp:33: warning: no return statement in function returning non-void