Compilare: user.cpp: In function ‘int main()’: user.cpp:84:19: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[100000]’ [-Wformat=] scanf("%s", &x); ^ user.cpp:86:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<strlen(x);++i) ^