Compilare: user.cpp: In function ‘int main()’: user.cpp:101:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (strlen(c) == m - 1) ^ user.cpp:103:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < strlen(c); j++) ^ user.cpp:113:15: warning: ‘col’ may be used uninitialized in this function [-Wmaybe-uninitialized] lee(lin, col); ^ user.cpp:113:15: warning: ‘lin’ may be used uninitialized in this function [-Wmaybe-uninitialized]