Compilare: user.cpp: In function ‘void FAILURE(char*)’: user.cpp:24:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=1;j<strlen(A);++j) ^ user.cpp: In function ‘void KMP(char*, char*)’: user.cpp:37:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<strlen(B)) ^ user.cpp:41:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j==strlen(A)-1) ^