Question
#include<stdio.h>
struct names
{
char str[25];
struct names *next;
};
typedef struct names slist;
void main()
{
slist *list,*temp;
list=(slist *)malloc(sizeof(slist)); // Dynamic Memory Allocation
strcpy(list->str,"Hai");
list->next=NULL;
temp=(slist *)malloc(sizeof(slist)); // Dynamic Memory Allocation
strcpy(temp->str,"Friends");
temp->next=list;
list=temp;
while (temp != NULL)
{
printf("%s",temp->str);
temp=temp->next;
}
}
What will be output if you compile following c code ?
#include<stdio.h>
struct names
{
char str[25];
struct names *next;
};
typedef struct names slist;
void main()
{
slist *list,*temp;
list=(slist *)malloc(sizeof(slist)); // Dynamic Memory Allocation
strcpy(list->str,"Hai");
list->next=NULL;
temp=(slist *)malloc(sizeof(slist)); // Dynamic Memory Allocation
strcpy(temp->str,"Friends");
temp->next=list;
list=temp;
while (temp != NULL)
{
printf("%s",temp->str);
temp=temp->next;
}
}
Answer: Option C
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It is sometimes desirable to include within a structure one member i.e. a pointer to the parent structure type. Such structures are known as Self-Referencial structures. These structures are very useful in applications that involve linked data structures, such as lists and trees. [A linked data structure is not confined to some maximum number of components. Rather, the data structure can expand or contract in size as required.]
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