Compilare: user.cpp: In function ‘void Read()’: user.cpp:41:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(unsigned j = 0; j < m; j++) ^ user.cpp:43:27: warning: narrowing conversion of ‘(j + 1u)’ from ‘unsigned int’ to ‘int’ inside { } [-Wnarrowing] romeo = {i, j + 1}; ^ user.cpp:45:29: warning: narrowing conversion of ‘(j + 1u)’ from ‘unsigned int’ to ‘int’ inside { } [-Wnarrowing] julieta = {i, j + 1}; ^