Eroare de compilare: user.cpp: In function ‘int fcmp(const void*, const void*)’: user.cpp:11: error: ‘strcmp’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:21: error: ‘strlen’ was not declared in this scope user.cpp:34: error: ‘qsort’ was not declared in this scope user.cpp:40: error: ‘strcmp’ was not declared in this scope user.cpp:43: error: ‘strcmp’ was not declared in this scope user.cpp:43: warning: left-hand operand of comma has no effect user.cpp:45: error: ‘strcmp’ was not declared in this scope