C / C++ / MFC

2-Apr-09 0:17

I'm trying to incurment my array of inputs while the loop goes around

example

int num=2;
int array[1,2,3,4,etc];

for(int l=0;l<num;l++){>
   do this etc}

how do i incurment the array as the number changes??

hope i've made my question clear Sniff | :^)

i.e. the num determines how many of the array values to take in

Any help would be much appreciated thanks

Rajesh R Subramanian2-Apr-09 0:21

Rajesh R Subramanian

2-Apr-09 0:21

I don't get a clue of what you're talking about. Rephrase, perhaps?

It is a crappy thing, but it's life -^ Carlo Pallini

Jacavienna2-Apr-09 0:47

2-Apr-09 0:47

k i'm writing a sound synth but that's not the bit i'm having a problem with....i need to take in values from the user such as how many frequencies they want to play and then what freq's they choose..so i want my program to run as many freqs(num) then to incrument what stored in the array ie. the actual frequencies..

<pre>
num=3;
input[220,440,660];
freq=input[i]
for(l=0;l<num:l++){
osc(buffer,amp,freq,wave,&ndx);
soundout(psf,buffer);
}
</pre>

the user input is workin and the synth is working but i can't get the other freq's in the array to play it's just picking up the first one...

hope this is better WTF | :WTF:

Give us a clue

Rajesh R Subramanian2-Apr-09 0:56

Rajesh R Subramanian

2-Apr-09 0:56

Jacavienna wrote:
osc(buffer,amp,freq,wave,&ndx);

What is "buffer", "freq", etc., Simply, what is that you want?

Jacavienna wrote:
input[220,440,660];

What's that?

I think I'm almost done with you. Hmmm | :|

It is a crappy thing, but it's life -^ Carlo Pallini

Re: Give us a clue

Jacavienna2-Apr-09 1:14

2-Apr-09 1:14

there's alot to it lol....it's just controls for the synth....
if you still wanna know send us a message and i'll send you the stuff you need to make it work ie soundio.cpp oscil.cpp and ftables.cpp these all make up the definations of the synth i'm just using them..

Stuart Dootson2-Apr-09 2:19

Stuart Dootson

2-Apr-09 2:19

So...you get num from the user. You want to allocate an array of that size, then get num values from the user and put them into the array?

This should do:

#include <stdio.h>
int main(int argc, char** argv)
{
   int num;
   printf("Number of frequencies?\n");
   scanf("%d", &num);
   int*  freq = new int[num];
   for(int i=0;i<num;++i)
   {
      printf("Frequency %d?\n", i);
      scanf("%d", freq+i);
   }
   // Do stuff with the frequencies
   delete[] freq;
}

As Cedric said, you're probably better off using std::vector.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

_AnsHUMAN_ 2-Apr-09 0:26

_AnsHUMAN_

2-Apr-09 0:26

Select "Ignore HTML tags in this message (good for code snippets)" from the bottom of your screen so that we are able to see the code in proper way.
Secondly, you can ask the user to input a number, say "num". Now you can loop upto num times.'
I hope I read your question correctly

You need to google first, if you have "It's urgent please" mentioned in your question.
Wink | ;-)

_AnShUmAn_

Divyang Mithaiwala2-Apr-09 0:51

Divyang Mithaiwala

2-Apr-09 0:51

If you are talking about dynamic array
means size of array get change at run time
then you can't declare array this way.

You have to take pointer of int array
And use melloc & realloc method for dynamic allocation.

If this is not what you are asking then please clarify your question.

regards,
Divyang Mithaiwala
Software Engineer

Jacavienna2-Apr-09 1:01

2-Apr-09 1:01

cool thanks a mill for responding....i don't know much about malloc (tho we did touch on it in class)....

thing is the loop in working and it's sending the amount of freq but not the values...i have the array set at [44] so the user shouldn't go out of bounds....so your saying this won't work Frown | :(

...is there any other way?? ie without using malloc...assignment is in at 4 today so i don't have time to look into how malloc functions Frown | :(

....what i have should be enough but would be better if i could get it to play multiple freqs .... thanks again Smile | :)

Cedric Moonen2-Apr-09 1:01

Cedric Moonen

2-Apr-09 1:01

If you want a dynamic array, I suggest you take a look at a std::vetor.

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

Jacavienna2-Apr-09 1:10

2-Apr-09 1:10

hey i have the std::vector function but what do i need to access it ie where does <pre> #include <vector> </pre> come from? do i need to download something??

Cedric Moonen2-Apr-09 1:14

Cedric Moonen

2-Apr-09 1:14

Jacavienna wrote:
std::vector function

It's not a function, it's a class (template).

You have to #include <vector>. Here[^] is a small guide to get you started with the STL. If you are still stuck after that, try googling for vector tutorials.

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

any sync opration with vc++ concepts give a sample

David Crow2-Apr-09 3:23

David Crow

2-Apr-09 3:23

Jacavienna wrote:
how do i incurment the array as the number changes??

array[l]

Check out the subscript operator.

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

AshNis2-Apr-09 0:11

AshNis

2-Apr-09 0:11

i need a application which carry all desktop setting means folder and files ,
which carry my documeunt and any personal data and go to any guest pc and do any updation there and come back in you pc and sync and you found all updation there .give a sample like that

or can any body help me

Re: any sync opration with vc++ concepts give a sample

_AnsHUMAN_ 2-Apr-09 0:21

_AnsHUMAN_

2-Apr-09 0:21

How much are you ready to shell out of your pocket?

AshNis wrote:
i need a application which carry all desktop setting means folder and files ,
which carry my documeunt and any personal data and go to any guest pc and do any updation there and come back in you pc and sync and you found all updation there .give a sample like that

wow! the application goes to guest pc, does the updation and come back to your pc.... interesting

You need to google first, if you have "It's urgent please" mentioned in your question.
Wink | ;-)

_AnShUmAn_

Re: any sync opration with vc++ concepts give a sample

Iain Clarke, Warrior Programmer2-Apr-09 5:39

Iain Clarke, Warrior Programmer

2-Apr-09 5:39

Live Mesh[^]

May be of use to you! I've not used it myself, but I hear good things about it...

Or a memory stick?

Iain.

In the process of moving to Sweden for love (awwww).
If you're in Scandinavia and want an MVP on the payroll (or happy with a remote worker), give me a job!

How to delete CStatic object.

hemlat1-Apr-09 23:01

hemlat

1-Apr-09 23:01

Hi,
I have created CStatic object in my MFC application.I have allocated memory to it.If I delete static variable It is giving breakpoint.I am unable to delete CStatic object.Can anyone help me. Cry | :((

Code-o-mat1-Apr-09 23:36

Code-o-mat

1-Apr-09 23:36

What do you mean by "It is giving breakpoint"? Do you mean that it is failing an ASSERT? If yes, where and what?

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <

hemlat1-Apr-09 23:39

hemlat

1-Apr-09 23:39

It is showing corruption of heap.

Code-o-mat1-Apr-09 23:54

Code-o-mat

1-Apr-09 23:54

So you created a static like this: mystatic = new CStatis;, and deleted it like this: delete mystatis; and you get something like "the heap around whatever has been corrupted"?

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <

hemlat2-Apr-09 0:09

hemlat

2-Apr-09 0:09

I have created member variable CStatic *m_myStatic;,I am allocating memory like this m_myStatic = new CStatic[m_filecount];,and I am deleting in destructor.It is showing breakpoint is due to corruption of heap.

Maximilien2-Apr-09 0:15

Maximilien

2-Apr-09 0:15

How are you deleting it ?

like this : delete [] m_myStatic;

This signature was proudly tested on animals.

Code-o-mat2-Apr-09 0:25

Code-o-mat

2-Apr-09 0:25

I see, well, you need to delete an array -as Maximilien already pointed out- like this: delete []m_myStatic;. Otherwise, heap corruption can be caused by indexing out of your array, so you try to write items in the array which are not in the array at all, for example:

int *int_array = new int[5];
int_array[10] = 4;

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <