accesibil.cpp: In function 'int main()': accesibil.cpp:105: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result accesibil.cpp:106: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result accesibil.cpp:109: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result accesibil.cpp:113: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result accesibil.cpp:117: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result accesibil.cpp:107: warning: 'schimb' may be used uninitialized in this function