Eroare de compilare: user.cpp:32:3: warning: no newline at end of file user.cpp:4: error: '::main' must return 'int' user.cpp: In function 'int main()': user.cpp:9: warning: format '%[lg' expects type 'char*', but argument 2 has type 'long int*' user.cpp:14: warning: unknown conversion type character '[' in format user.cpp:14: warning: too many arguments for format user.cpp: At global scope: user.cpp:19: error: ISO C++ forbids declaration of 'gcd' with no type