Compilare: user.cpp: In function ‘void citire()’: user.cpp:15:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<strlen(a);i++) ^ user.cpp: In function ‘long long unsigned int trans(int*)’: user.cpp:36:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘long long unsigned int putere(long long unsigned int, long long unsigned int)’: user.cpp:29:1: warning: control reaches end of non-void function [-Wreturn-type] } ^