Eroare de compilare: user.cpp:2: error: ‘::main’ must return ‘int’ user.cpp: In function ‘int main()’: user.cpp:5: error: ‘errno_t’ was not declared in this scope user.cpp:5: error: expected ‘;’ before ‘f’ user.cpp:6: error: ‘f’ was not declared in this scope user.cpp:6: error: ‘fopen_s’ was not declared in this scope user.cpp:7: error: ‘g’ was not declared in this scope user.cpp:9: error: ‘fscanf_s’ was not declared in this scope