Compilare: user.cpp: In function ‘int main()’: user.cpp:68: warning: unused variable ‘ok2’ user.cpp:46: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:47: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:50: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:67: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int cifra(int)’: user.cpp:42: warning: control reaches end of non-void function user.cpp: In function ‘int putere(int)’: user.cpp:25: warning: ‘s’ may be used uninitialized in this function