Compilare: user.cpp: In function ‘int main()’: user.cpp:55:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=1; i<=cuv.length()-1; i++) ^ user.cpp:67:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] prz[K].x=i; ^ user.cpp:68:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] prz[K].y=j; ^ user.cpp:76:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] Cv[F[xx]].x=i; ^ user.cpp:77:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] Cv[F[xx]].y=j; ^ user.cpp:88:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=1; i<=cuv.length()-1; i++) ^ user.cpp:100:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int pp=2; pp<=cuv.length()-1; pp++) ^ user.cpp:101:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=1; i<=cuv.length()-pp; i++) ^ user.cpp:54:9: warning: unused variable ‘pz’ [-Wunused-variable] int pz=0; ^