Eroare de compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:17: error: ‘y’ was not declared in this scope user.cpp:20: error: ‘k’ was not declared in this scope user.cpp:25: error: ‘y’ was not declared in this scope user.cpp: In function ‘int suma(int)’: user.cpp:35: warning: no return statement in function returning non-void user.cpp: In function ‘int main()’: user.cpp:49: error: ‘x’ was not declared in this scope user.cpp:49: error: ‘y’ was not declared in this scope user.cpp:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:45: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result