Eroare de compilare: user.cpp:7: error: expected constructor, destructor, or type conversion before '<' token user.cpp: In function 'void citire()': user.cpp:11: error: 'ifstream' was not declared in this scope user.cpp:11: error: expected `;' before 'fin' user.cpp:12: error: 'fin' was not declared in this scope user.cpp:14: error: 'a' was not declared in this scope user.cpp:14: error: 'b' was not declared in this scope user.cpp:15: error: 'g' was not declared in this scope user.cpp: In function 'void dfs(int)': user.cpp:24: error: 'g' was not declared in this scope