Compilare: user.cpp: In function ‘void KMP()’: user.cpp:49:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol[++ sol[0]] = j - n; ^ user.cpp: In function ‘int main()’: user.cpp:64:18: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(pattern); ^ user.cpp:66:15: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(text); ^ /tmp/ccRsviax.o: In function `main': user.cpp:(.text.startup+0x19): warning: the `gets' function is dangerous and should not be used.