Borderou de evaluare (job #3082)

Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:7:2: error: ‘a’ was not declared in this scope user.cpp:8:6: error: ‘i’ was not declared in this scope user.cpp:10:6: error: ‘n’ was not declared in this scope user.cpp:13:7: error: ‘x’ was not declared in this scope user.cpp:14:3: error: ‘b’ was not declared in this scope user.cpp:16:2: error: ‘sol’ was not declared in this scope user.cpp:19:6: error: ‘b’ was not declared in this scope user.cpp:22:2: error: expected ‘}’ at end of input