Comments by the_beginner

the_beginner 6-Jul-17 2:41am View

thanks for reply, will keep in mind

the_beginner 6-Jul-17 2:00am View

ok Sorry, let me break it down:
1. Take n righmost bits of Y and place them at location P.
a) ~0<<n --- > to make all bits 1 except rightmost n bits
b) ~(~0<<n) --> get it reverse
c) y & ~(~0<<n) ---> Make all bits except rightmost n bits to 0
d) (y & ~(~0<<n)) << (p-1) --> Move n rightmost bits of Y to position P

2. Now to make n bits of x from position P to 0
a. Same steps a-b from 1
b. ~((~(~0<<n)) << (p-1)) ---> Make n bits from position P as 0 and rest will be 1.
c. x & ~((~(~0<<n)) << (p-1)) --> Make n bits from position P as 0 in x.
3. Finally 'or' between final results from step 1 and 2. to get desired result.
(x & ~((~(~0<<n)) << (p-1))) | ((y & ~(~0<<n)) << (p-1))

the_beginner 6-Jul-17 0:48am View

This is what i came up with, any improvement which can be done to it:
unsigned setbits(unsigned x, int p, int n, unsigned y)
{
return((x & ~((~(~0<<n))<<(p-1)))| ((y & ~(~0<<n))<<(p-1)));
}

the_beginner 4-Jul-17 8:23am View

Thanks for reply. So when I am entering "abaad", after hitting Enter, c is taking values one by one from "abaad" and then going through while loop ?

the_beginner 21-Jun-17 4:26am View

thanks, got it

the_beginner 21-Jun-17 2:47am View

thanks

the_beginner 21-Jun-17 2:45am View

Thanks for reply.
So there is no difference between char *str and char str[] except for that char *str is constant

the_beginner 21-Jun-17 2:25am View

Thanks for reply

the_beginner 21-Jun-17 2:25am View

Thanks for advice

the_beginner 21-Jun-17 2:15am View

Thanks a lot, i will keep the comment for variable names in notice.

the_beginner 22-Oct-15 7:10am View

So except for initializing values to zero does it serve any other purpose

the_beginner 6-Oct-15 4:22am View

Thanks

the_beginner 6-Oct-15 4:20am View

||=== Build: Debug in Learning-1 (compiler: GNU GCC Compiler) ===|
obj\Debug\main.o||In function `ZN4BaseC2Ev':|
main.cpp|13|undefined reference to `vtable for Base'|
obj\Debug\main.o||In function `ZN4BaseD2Ev':|
main.cpp|16|undefined reference to `vtable for Base'|
||=== Build failed: 2 error(s), 0 warning(s) (0 minute(s), 0 second(s)) ===|

here line 13 is Base constructor and line 16 is Base Destructor

the_beginner 20-Sep-15 6:33am View

Thanks sir, got the troubling mistake (used temp instead of temp1 :P)

the_beginner 16-Sep-15 8:20am View

Thanks a lot, finally it worked now I am declaring pointers as NULL during declaration and assigning values only after getting it in constructors. :D :D

the_beginner 16-Sep-15 8:20am View

Thanks a lot, finally it worked now I am declaring pointers as NULL during declaration and assigning values only after getting it in constructors. :D :D

the_beginner 16-Sep-15 7:49am View

no thats what i was saying if i do this
Department dp;
cin >> dp;
cout <<dp;

it won't crash ot works totally fine

the_beginner 16-Sep-15 7:39am View

In case of Department class object either with or without deleting pointer to Student class it works fine, only in college class object all hell break loose

the_beginner 16-Sep-15 7:33am View

Can anyone please help me out here and give a working code just so that I can make multiple Department class object data members of College class according to user input. As code is already there u just have to tweak the pointer to Department class declaration. It would be a great help .

the_beginner 16-Sep-15 7:29am View

Its not working with this change too :(

the_beginner 16-Sep-15 7:14am View

Sir, thanks for ur reply,
could u give me a sample code to initialize multiple objects of department class form college class according to user input because I am not able to figure it out :D

the_beginner 16-Sep-15 7:14am View

Sir, thanks for ur reply,
could u give me a sample code to initialize multiple objects of department class form college class according to user input because I am not able to figure it out :D

the_beginner 16-Sep-15 6:55am View

But with this method i will be able to create one object only , however i want it to be user input

the_beginner 16-Sep-15 4:35am View

yes

the_beginner 16-Sep-15 4:14am View

Then maybe something to do with IDE, i am using codeblocks

the_beginner 14-Sep-15 4:44am View

thanks

the_beginner 11-Sep-15 2:59am View

Down-scroll the question , they are in main()

the_beginner 7-Sep-15 8:44am View

Thanks, thats a lot of content..

the_beginner 7-Sep-15 8:09am View

i was looking for linked list, stack, queue, tree and graphs actually

the_beginner 7-Sep-15 6:58am View

thanks

the_beginner 7-Sep-15 6:57am View

thanks, I just want to ask as I am new to coding, generally in case of declaring array of objects do we need to initialize them in constructor or not ?

the_beginner 7-Sep-15 5:35am View

It was a error in my question i have corrected it but if u see 2nd line in error, its because of Department and student,

the_beginner 3-Sep-15 8:56am View

thanks it worked, but i am not using '=' in main code than how its affecting, also if same code is ran with

A( const A &a) //copy constructor
{
m_aptr=a.m_aptr;
}

it wrks fine how? , it would be great if u can answer.

the_beginner 3-Sep-15 6:57am View

No error , it just show stop working, also problem is due to
*this=a in copy-constructor, if I replace that line with line under it (which is commented out), program runs successfully

the_beginner 1-Sep-15 1:03am View

Thanks

the_beginner 27-Aug-15 7:10am View

It will fail miserably :P , try on 1 to 9
prime no: 1,2,3,5,7
prime mult.= 210 , not divisible by 8 or 9 :P

the_beginner 27-Aug-15 6:11am View

Also any comment or suggestion on coding will also be very appreciated, I am trying to learn C++

the_beginner 26-Aug-15 3:00am View

Thanks, looks like my username won't be changing for quite a more time :P

the_beginner 24-Aug-15 7:23am View

Thanks Richard sir.

the_beginner 24-Aug-15 7:15am View

Thanks it worked, but just a small query why code worked when using cin instead of getline.
Iam using delete[] names; to release memory at the end of code

the_beginner 24-Aug-15 6:55am View

thanks for ur answer.
but names[i] = new string; is giving compile time error:Invalid conversion from string* to char
By the way how come this code works if i use
cin >> names[i] instead of getline(cin,name) (but i can't enter names with spaces)

the_beginner 19-Aug-15 2:19am View

Thanks

Comments by the_beginner (Top 42 by date)