Compilare: user.cpp: In function ‘void urca(int)’: user.cpp:16: warning: unused variable ‘aux’ user.cpp: In function ‘void coboara(int)’: user.cpp:29: warning: unused variable ‘aux’ user.cpp: In function ‘void cit(int&)’: user.cpp:85: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result user.cpp:91: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result user.cpp: In function ‘int main()’: user.cpp:123: warning: unused variable ‘j’ user.cpp:103: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:104: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:106: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result