Borderou de evaluare (job #239122)

Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:12:15: error: ‘sort’ was not declared in this scope user.cpp:13:16: error: expected ‘)’ before ‘;’ token user.cpp:13:18: error: expected ‘;’ before ‘)’ token user.cpp:13:19: warning: statement has no effect [-Wunused-value] user.cpp:14:5: error: ‘x’ was not declared in this scope user.cpp:17:6: error: ‘suma’ was not declared in this scope user.cpp:20:5: error: ‘suma’ was not declared in this scope user.cpp:8:16: warning: unused variable ‘a’ [-Wunused-variable] user.cpp:8:20: warning: unused variable ‘b’ [-Wunused-variable]