Compilare: user.cpp: In function ‘void val(str&)’: user.cpp:42:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<ha$[lin].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:128:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] acr.v[acr.v[0]]=sir[po]; ^ user.cpp:140:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[i].size();j++) ^ user.cpp:155:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<deal[i].size();j++) ^ user.cpp:156:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=j+1;k<deal[i].size();k++) ^ user.cpp:170:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[*it].size();j++) ^ user.cpp:174:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=1;j<sirmod.size();j++) ^ /tmp/ccKggzf3.o: In function `main': user.cpp:(.text.startup+0xc9): warning: the `gets' function is dangerous and should not be used.