Compilare: user.cpp: In function ‘int main()’: user.cpp:41:41: warning: array subscript has type ‘char’ [-Wchar-subscripts] mat[h][l][c]=mat[coh[in]][col[in]][coc[in]]+1; ^ user.cpp:41:50: warning: array subscript has type ‘char’ [-Wchar-subscripts] mat[h][l][c]=mat[coh[in]][col[in]][coc[in]]+1; ^ user.cpp:41:59: warning: array subscript has type ‘char’ [-Wchar-subscripts] mat[h][l][c]=mat[coh[in]][col[in]][coc[in]]+1; ^ user.cpp:11:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d" ,&n,&m); ^ user.cpp:12:55: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d%d%d%d%d" ,&hs,&ls,&cs,&hc,&lc,&cc); ^ user.cpp:14:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d%d" ,&h,&l,&c); ^