Compilare: user.cpp: In function ‘int main()’: user.cpp:27:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] Next[i][j][ch] = j; ^ user.cpp:29:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] Next[i][j][ch] = Next[i][j + 1][ch]; ^ user.cpp:29:40: warning: array subscript has type ‘char’ [-Wchar-subscripts] Next[i][j][ch] = Next[i][j + 1][ch]; ^ user.cpp:16:18: warning: unused variable ‘k’ [-Wunused-variable] int n, m, i, j, k, lg, nr, pos; ^ user.cpp:19:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d\n", &n, &m); ^ user.cpp:21:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s\n", cuv[i] + 1); ^ user.cpp:36:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c\n", &ch); ^