Compilare: user.cpp: In function ‘void read()’: user.cpp:19:19: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[100001]’ [-Wformat=] scanf("%s", &s); ^ user.cpp:21:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<strlen(s); i++) ^ user.cpp: In function ‘void init()’: user.cpp:48:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=2; i<=strlen(s); i++) ^ user.cpp: In function ‘void read()’: user.cpp:17:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v); ^ user.cpp:19:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", &s); ^