Compilare: user.cpp: In function ‘int main()’: user.cpp:28:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<s.size()+R+10;i++) In[i]=Sf[i]=z[i]=0; ^ user.cpp:41:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<s.size();i++) ^ user.cpp:42:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (z[1+i+st.size()]==st.size()) In[i]=1; ^ user.cpp:65:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<s.size();i++) ^ user.cpp:66:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (z[1+i+dr.size()]==dr.size()) Sf[i]=1; ^ user.cpp:76:16: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (In[i]) ^