Answer / splurgeop

// assumin all things are given function to delete
from beginning.....



int delete_from_beg()
{
int el;
if(head==NULL)
{
printf("\n can't delete ");
return -1;
}
else
{
struct doubly *temp;
temp=head;
el=temp->info;
head=temp->next;
temp->next=NULL;
head->prev=NULL;
return el;
}

}



//delete from end


int delete_from_end()
{
int el;
if(head==NULL)
{
printf("\n can't delete");
return -1;
}
else
{
struct doubly *temp;
temp=head;
while(temp->next!=NULL)
temp=temp->next;
el=temp->info;
if(temp==head)
head=NULL;
else
temp->prev->next=NULL;
return el;
}
}




// delete from any position



int delete_at_pos(int item)
{
int el,flag=0;
struct doubly *temp;
if(head==NULL)
{
printf("\n cant delete ");
return -1;
}
else
{
temp=head;
while(item>1)
{
item--;
temp=temp->next;
if(temp==NULL&& item>=1)
{
flag=1;
break;
}
}
if(flag==1)
{
el=-1;
printf("\n cant delete at the specified
location");
}
else
{
if(temp==head)
{
el=temp->info;
head=temp->next;
}
else
{
struct doubly *t;
t=temp;
el=temp->info;
temp->prev->next=t->next;
temp->next->prev=t->prev;
}

}
}
return el;
}




// where doubly is structure

struct doubly
{
int data;
struct doubly *prev,*next;
};

Answer / viktor

typedef int info_t;
typedef struct element
{
info_t info;
struct element *next;
struct element *prev;
}node;
typedef node* nodep;


Function to delete a node:

void del_node(nodep p)
{
(p->prev)->next=p->next;
(p->next)->prev=p->prev;
free(p);
}

Answer / shruti

to delete an element.
enter the position of the element to be deleted.
-> pos.

structure of node is

struct node
{
int data;
struct node *prev , *next;
}

//home is the starting pointer of hte list.
struct node * delete(struct node *home , int pos)
{
temp = home;
if(pos == 1)
{
temp = home;
home = home -> next;
free(temp);
}

temp = home;
p = home;

for(i = 0 ; i < pos ; i++)
{
p = p -> next;
}

temp = p -> next;
temp1 = temp -> next;

p -> next = temp1;
temp1 -> prev = p

free(temp);
}

return home;
}

Answer / aggdhbsam

dsgfdagfdg
[op;iop

write a c program to Create a registration form application by taking the details like username, address, phone number, email along with password and confirm password (should be same as password).Ensure that the password is of 8 characters with only numbers and alphabets. Take such details for 5 users and display the details. In place of password display “****”. (Use Structures).

0 Answers   CDAC, College School Exams Tests,

---

Question: We would like to design and implement a programming solution to the reader-writer problem using semaphores in C language under UNIX. We assume that we have three readers and two writers processes that would run concurrently. A writer is to update (write) into one memory location (let’s say a variable of type integer named temp initialized to 0). In the other hand, a reader is to read the content of temp and display its content on the screen in a formatted output. One writer can access the shared data exclusively without the presence of other writer or any reader, whereas, a reader may access the shared memory for reading with the presence of other readers (but not writers).

1 Answers  

---

main() { char *cptr,c; void *vptr,v; c=10; v=0; cptr=&c; vptr=&v; printf("%c%v",c,v); }

1 Answers  

---

const int perplexed = 2; #define perplexed 3 main() { #ifdef perplexed #undef perplexed #define perplexed 4 #endif printf("%d",perplexed); } a. 0 b. 2 c. 4 d. none of the above

1 Answers   emc2, HCL,

---

#define prod(a,b) a*b main() { int x=3,y=4; printf("%d",prod(x+2,y-1)); }

1 Answers  

---

How do I write a program to print proper subset of given string . Eg :input: abc output:{},{a},{b},{c},{a,b},{a,c},{b,c}, {a,b,c}.I desperately need this program please mail me to saravana6m@gmail.com

11 Answers   Deshaw, Infosys,

---

union u { struct st { int i : 4; int j : 4; int k : 4; int l; }st; int i; }u; main() { u.i = 100; printf("%d, %d, %d",u.i, u.st.i, u.st.l); } a. 4, 4, 0 b. 0, 0, 0 c. 100, 4, 0 d. 40, 4, 0

1 Answers   HCL,

---

main() { char *p = "hello world"; p[0] = 'H'; printf("%s", p); } a. Runtime error. b. “Hello world” c. Compile error d. “hello world”

5 Answers   HCL,

---

#include<conio.h> main() { int x,y=2,z,a; if(x=y%2) z=2; a=2; printf("%d %d ",z,x); }

1 Answers  

---

#include<stdio.h> main() { const int i=4; float j; j = ++i; printf("%d %f", i,++j); }

1 Answers  

---

programming in c lanugaue programm will errror error with two header file one as stdio.h and other one is conio.h

1 Answers  

---

main() { int i=0; while(+(+i--)!=0) i-=i++; printf("%d",i); }

9 Answers   CSC, GoDB Tech, IBM,

---