Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:9: warning: unknown escape sequence '\c' user.cpp:11: warning: unknown conversion type character ‘r’ in format user.cpp:11: warning: too many arguments for format user.cpp:29: error: ‘n’ was not declared in this scope 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 ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:11: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result