Compilare: user.cpp: In function ‘int transformare()’: user.cpp:48: warning: unused variable ‘ii’ user.cpp:49: warning: unused variable ‘ch’ user.cpp: In function ‘int main()’: user.cpp:132: warning: unused variable ‘ok’ user.cpp:121: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:122: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:124: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result user.cpp:123: warning: ‘rez’ may be used uninitialized in this function /tmp/ccgrV4bE.o: In function `main': user.cpp:(.text+0x40b): warning: the `gets' function is dangerous and should not be used.