Compilare: user.cpp: In function ‘bool palindorm()’: user.cpp:10:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<strlen(s)/2; i++) ^ user.cpp: In function ‘int main()’: user.cpp:21:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=strlen(s);j>=strlen(s)-i;j--) ^