Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:27:13: warning: unused variable ‘w’ [-Wunused-variable] int w=v.back(); ^ user.cpp:36:17: error: ‘j’ was not declared in this scope for(j=1;j<=nC) ^ user.cpp:36:24: error: ‘nC’ was not declared in this scope for(j=1;j<=nC) ^ user.cpp:36:26: error: expected ‘;’ before ‘)’ token for(j=1;j<=nC) ^ user.cpp:37:9: error: expected primary-expression before ‘}’ token } ^