check C Code And Explain What It Does And Also Check For Errors, programming homework help
check C Code And Explain What It Does And Also Check For Errors, programming homework help
*Note*: You do not need to use a programming application to complete these questions as they contain only parts of a program. You should be able to complete these questions in 20 minutes.
Question 1: Consider the following program fragment that defines a self‐referential type:
#include <stdbool.h>
#include <stdlib.h>
struct dnode_int;
typedef struct dnode_int *dnode;
struct dnode_int
{
dnode prev;
void *data;
dnode next;
};
typedef struct roundabout_int {dnode cursor;} *roundabout;
…
int f1(roundabout r)
//Comment here
{
dnode c=r->cursor;
//Comment here
int s=0;
//Comment here
while (c != NULL)
//Comment here
{
s++; c=c->prev;
//Comment here
}
return s;
//Comment here
}
a) What does the function
f1() do (or should do if it were free of errors)? In 1-2 sentences, replace the “Comment here” within the
f1() function with a explanation of what that line of code does. Also include references to other parts of the code if necessary.
b) Describe possible problems with the code of the function
f1().
_________________________________________________________________________________________________
Question 2: Consider the following program fragment that defines a self‐referential class:
#include <stdbool.h>
#include <stdlib.h>
struct node_int;
typedef struct node_int *node;
struct node_int
{
void *data;
bool empty;
node next;
};
typedef struct list_int {node first;} *list;
…
bool f2(list ell)
//Comment here
{
node c=ell;
//Comment here
int r=0;
//Comment here
while (c != NULL)
//Comment here
{
if (! c->empty)
//Comment here
{
r++;
//Comment here
}
c=c->next;
//Comment here
}
return (r == 0);
//Comment here
}
a) What does the function
f2() do (or should do if it were free of errors)? In 1-2 sentences, replace the “Comment here” within the
f2() function with a explanation of what that line of code does. Also include references to other parts of the code if necessary.
b) Describe possible problems with the code of the function
f2().
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