Question

TASK H1: with each of the 4 marked statements immediately below, explain, in
plain English,
a) what the statement does and
b) its purpose in the program.

const int MAXSTACKSIZE = 5; - TASK H1.1 Explain this statement
const int BOTTOMOFSTACK = -1; - TASK H1.2 Explain this statement
typedef char StackElement; -TASK H1.3 Explain this statement



TASK H1.4 Explain this statement


typedef struct {
StackElement contents[MAXSTACKSIZE];
int top;
} Stack;

Answer 1

TASK:

TASK H1: with each of the 4 marked statements immediately below, explain, in plain English,

a) what the statement does and

b) its purpose in the program.

const int MAXSTACKSIZE = 5; - TASK H1.1 Explain this statement

const int BOTTOMOFSTACK = -1; - TASK H1.2 Explain this statement

typedef char StackElement; -TASK H1.3 Explain this statement

TASK H1.4 Explain this statement

typedef struct {

StackElement contents[MAXSTACKSIZE];

int top;

} Stack;

Answer:

H1.1: MAXSTACKSIZE – is a constant that represents integer value 5. This variable is used in structure as a size of “contents” array.

H1.2: BOTTOMOFSTACK – is a constant that represents integer value -1. In the program this variable will represent the state when the Stack is empty -. if(top == BOTTOMOFSTACK) /*than Stack is empty*/

H1.3: StackElement – declaration of a new type that represents char(or other type you need). In C programs that approach is used to enable template classes. Each time you change the type in this typedef you changed the template specification for Stack structure.

H1.4: This statement determines new type Stack that represents template structure with array "contents" and int "top" variable. To create an instance you need: Stack [variablename];

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