Compilare: user.cpp: In function ‘int main()’: user.cpp:15:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<a.length()){ ^ user.cpp:22:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i<b.length()){ ^ user.cpp:23:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (a[j]==b[i]) {if (j+1!=a.length()) {i++; j++;} else {rasp[n]=i-a.length()+1; n++; j=x[j];; i++;}} else if (j==0) i++; else j=x[j-1]; ^