Help in this program plz.

[Chetanhl]

Can some1 tell me whats wrong in my code or plz provide your own solution so that i can learn from it.I got this question in a text whos result shows 0.0% accuracy in this code althought getting same output.Question is below:-


Hey i am solving this question :-

Time-Division Multiplexing (TDM) is a type of multiplexing in which two or more signals or bit streams are transferred simultaneously as sub-channels in one communication channel, but physically are taking turns on the channel. The time domain is divided into several recurrent time slots of fixed length, one for each sub-channel. A data block of sub-channel 1 is transmitted during timeslot 1, sub-channel 2 during timeslot 2, etc. After the last sub-channel the cycle starts all over again with a new frame, starting with the second sample, byte or data block from sub-channel 1, etc.

One TDM frame consists of one timeslot per sub-channel. In this problem, you have to determine the data that would be transmitted in the first frame using TDM. You would be given the data for each channel, the no of channels, the number of time slots available in the frame and the timeslot length as input to the function. In case a time slot could not filled completely with the data from a channel (i.e. the data in channel is finished), you should put byte 0xff to complete the time slot and NOT use the next channel's data.

The prototype of the function is:
struct BinaryData* transmitFirstFr ame(struct BinaryData input[], int count, int slotsize, int timeslots) where data of the each channel is given as struct BinaryData. Count represents the number of channels and slotsize represents the size of each time slot in bytes. timeslots represents the number of time slots available in a frame. You have to return the combined data as pointer to struct BinaryData. Return NULL in case of error in processing, or invalid input.

Constraints are:
1. The data given to you for each channel would be as array of bytes (represented as unsigned char in c/c++)

2. The inputs count, slotsize, timeslots should all be positive integers greater than zero. If not return NULL.

Example 1:Inputs:
--------------------------------------------------------------------------------
count = 3
bitrate = 8
timeslots = 4
input[1].value = "ABCDEFGHIJKLMN OPQR"
input[1].size = 18
input[2].value = "1234567890 "
input[2].size = 10
input[3].value = "abcdefghij kl"
input[3].size = 12

Output:
--------------------------------------------------------------------------------
Function transmitFirstFr ame() returns size = 32 and value = "ABCDEFGH123456 78abcdefghIJKLM NOP"
Explanation:
Here total number of timeslots are 4 and transfer bitrate is 8,
Timeslot 1 - 8 byte from channel 1 is selected ABCDEFGH
Timeslot 2 - 8 byte from channel 2 is selected 12345678
Timeslot 3 - 8 byte from channel 3 is selected abcdefgh
Tileslot 4 - 8 byte from channel 1 is selected IJKLMNOP
Hence the output is "ABCDEFGH123456 78abcdefghIJKLM NOP"

Example 2:Inputs:
--------------------------------------------------------------------------------
count = 5
bitrate = 10
timeslots = 7
input[1].value = "ABCD"
input[1].size = 4
input[2].value = "123456"
input[2].size = 6
input[3].value = "abcdefghi"
input[3].size = 9
input[4].value = "PQRSTUV"
input[4].size = 7
input[5].value = "mnopq"
input[5].size = 5

Output:
--------------------------------------------------------------------------------
Function transmitFirstFr ame() returns size = 70 and value = "ABCD0xff0xff0x ff0xff0xff0xff1 234560xff0xff0x ff0xffabcdefghi 0xffPQRSTUV0xff 0xff0xffmnopq0x ff0xff0xff0xff0 xff0xff0xff0xff 0xff0xff0xff0xf f0xff0xff0xff0x ff0xff0xff0xff0 xff0xff0xff0xff 0xff0xff"
Explanation:
Here total number of timeslots are 7 and transfer bitrate is 10,
Timeslot 1 - 10 byte from channel 1 is selected ABCD0xff0xff0xf f0xff0xff0xff - put last 6 bytes 0xff to complete the time slot
Timeslot 2 - 10 byte from channel 2 is selected 1234560xff0xff0 xff0xff - put last 4 bytes 0xff to complete the time slot
Timeslot 3 - 10 byte from channel 3 is selected abcdefghi0xff - put last 1 byte 0xff to complete the time slot
Tileslot 4 - 10 byte from channel 4 is selected PQRSTUV0xff0xff 0xff - put last 3 bytes 0xff to complete the time slot
Timeslot 5 - 10 byte from channel 5 is selected mnopq0xff0xff0x ff0xff0xff - put last 5 bytes 0xff to complete the time slot
Timeslot 6 - 10 byte are filled with 0xff as 0xff0xff0xff0xf f0xff0xff0xff0x ff0xff0xff
Timeslot 7 - 10 byte are filled with 0xff as 0xff0xff0xff0xf f0xff0xff0xff0x ff0xff0xff


::Code removed per Posting Guidelines::

[Chetanhl]

u can provide solutions either in vc++ devc++ or turboc++ i mean on any compiler u want
but plzz provide me solution this is my first experience of asking a question so forgiveif my way of asking is not so clear.

But plz tell me solution i had been working since 3 days afte test but cant figur eout how my code gone wrong and whats the optimum solution :(

[sicarie]

Chetanhl-

Please read the Posting Guidelines of this site. We ask that you not do things like bold multiple huge chunks of text, that you do use code tags, that you do use full English words (some1 is not English), and more.

I have removed the full code because you did not post whatever errors you were getting, and didn't say if they were logical or syntactical.

I will say you are using depricated types - <iostream> no longer needs the .h, you need to specify a namespace, you shouldn't be using conio.h, etc... but that's not directly addressing your issue.

Please read through the Guidelines and post a clear and specific question about your code. This could be about an error you are having - in which case we ask you to copy and paste the error as well.

Thanks

sicarie

[Chetanhl]

Chetanhl-

Please read the Posting Guidelines of this site. We ask that you not do things like bold multiple huge chunks of text, that you do use code tags, that you do use full English words (some1 is not English), and more.

I have removed the full code because you did not post whatever errors you were getting, and didn't say if they were logical or syntactical.

I will say you are using depricated types - <iostream> no longer needs the .h, you need to specify a namespace, you shouldn't be using conio.h, etc... but that's not directly addressing your issue.

Please read through the Guidelines and post a clear and specific question about your code. This could be about an error you are having - in which case we ask you to copy and paste the error as well.

Thanks

sicarie

i said i am new so didnt new how to post.

Actually i had logical errors in the program .

I have writen also that my program result shows 0.0% accuracy.

And this was typed in turboc++ in whioch we have to use iostream.h and coni.h etc

i have uploaded vc++ version of my program but getting logical errors as well as 1 syntax error.

Plz any1 provide me ur own solution of this question or correct my program.

download it from this link (3 kb size)- link removed

[sicarie]

Please post your compiler error as well as the few lines of code around the line number given in that error.

As for your logical errors, I would recommend putting cout statements through your code and printing out all your variables each time (or have a debug function that does this). Then you can see what values you have in there, and where they differ from your expected values.

If you have a debugger, this is the best place to use it.

[Chetanhl]

i tried and geting messed up i think whole program have to be made again.

So i Can any1 plzz provide me whole program for above question??

[Laharl]

Did you read the Posting Guidelines sicarie linked you to? We don't provide solutions here, we help with specific issues dealing with already-written code.