Eroare de compilare: user.cpp:6: error: ‘::main’ must return ‘int’ user.cpp: In function ‘int main()’: user.cpp:12: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘long long int’ user.cpp:8: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:9: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:10: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result