Compilare: user.c: In function ‘main’: user.c:28:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] if( v[ elev[j] ][ i ] == 1 ) ^ user.c:7:37: warning: unused variable ‘m’ [-Wunused-variable] int n, k, materie, i, j, nr, x, m, ok; ^ user.c:10:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d%d", &n, &k, &materie ); ^ user.c:12:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &nr ); ^ user.c:16:19: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &x ); ^