Compilare: user.cpp: In function ‘void Kmp(int, int)’: user.cpp:12:10: warning: unused variable ‘j’ [-Wunused-variable] { int i,j,l1=strlen(s[x]+1),l2=strlen(s[y]+1),k=0; ^ user.cpp: In function ‘int main()’: user.cpp:45:13: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] f>>s[i]+1; ^