Fixed length storage structure

Variable length storage with fixed maximum

Linked list storage

Relocatable structure

Less than m+n

Equal to m+n

Greater than m+n

Equal to m*n

Less than m+n

Equal to m+n

Greater than m+n

Greater them m*n

7

8

6

implementation dependent

both can be used interchangeably

scanf is delimited by end of line, while gets is not

scanf is delimited by blank space, while gets is not

none of above