Compilare: user.cpp: In function ‘int main()’: user.cpp:101:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (posline + 1 < L[whline].size() && poscol + 1 < C[whcol].size() - 1) ^ user.cpp:101:72: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (posline + 1 < L[whline].size() && poscol + 1 < C[whcol].size() - 1) ^ user.cpp:114:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (posnewcol + 1 < C[newcol].size() - 1 && posnewline + 1 < L[newline].size() && C[newcol][posnewcol + 1] == L[newline][posnewline + 1]) ^ user.cpp:114:81: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (posnewcol + 1 < C[newcol].size() - 1 && posnewline + 1 < L[newline].size() && C[newcol][posnewcol + 1] == L[newline][posnewline + 1]) ^ user.cpp:95:9: warning: variable ‘LU’ set but not used [-Wunused-but-set-variable] point LU = v[i]; ^ user.cpp:91:6: warning: unused variable ‘cnt’ [-Wunused-variable] int cnt = 0; ^