Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:13:2: error: expected primary-expression before ‘while’ (while(b!=0) ^ user.cpp:13:2: error: expected ‘)’ before ‘while’ user.cpp:16:1: error: ‘else’ without a previous ‘if’ else ^ user.cpp: At global scope: user.cpp:21:5: error: expected unqualified-id before ‘return’ return 0; ^ user.cpp:22:1: error: expected declaration before ‘}’ token } ^