Eroare de compilare: user.cpp:13: error: expected ‘,’ or ‘;’ before ‘ifstream’ user.cpp: In function ‘Pair Int(Pair, Pair, Pair, Pair)’: user.cpp:54: error: ‘ax’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:61: error: ‘F’ was not declared in this scope user.cpp:92: error: ‘next’ was not declared in this scope user.cpp:93: error: ‘cur’ was not declared in this scope user.cpp:93: error: ‘next’ was not declared in this scope user.cpp:94: error: ‘cur’ was not declared in this scope user.cpp:94: error: ‘next’ was not declared in this scope