hey guys,
how can I transform a decimal variable to octal variable ?

for example, I have n=9, and I want to save to octal type to variable 'oc_n' ...
thnx !

I see you've been getting pretty good help with your homework from LQ so far. But you would learn more if you listened in class.

I don't think the actual assignment said anything about "octal variable" or "octal type".

I expect most of the programmers here could guess what the assignment really was (despite the bad description you just posted) and do it for you. But I hope no one will.

Representing a number in a specific numeric base means representing it as a series of digits. In C, the data type you would use to store a series of digits is an array of char.

/*To Convert a Decimal number to Octal*/
extern int printf(const char *fmt , ...);
void main()
{
int m,i,n,z,x,b,c,d[100];
printf("Enter a Number : ");
scanf("%d",&n);
z=n;
b=1;
while(n>0)
{
c=n%8;
b=b*10+c;
n=n/8;
}
n=b;
b=0;
while(n>0)
{
c=n%10;
b=b*10+c;
n=n/10;
}
b=b/10;
printf("Octal Value for the given number is : %d ",b);
}

Hope this help.

Well the printf function provides octal formats as standard so simply this :

Will show the integer in myint in octal. Obviously this :
- will print the integer in decimal form.

These formats may be used with the scanf/printf/sprintf functions to get,output or store in a character string numbers in different representations.

bgeddy: I know that, but I need to save the different representations of the value in a data sheet, not to print it to the screen ...

alex1983-0112: thanks alot ! btw, why did u initialized so many unused variables ?

You can use sprintf instead of printf

If this isn't homework, that is your easiest option. If it is homework, that might depend on details of the assignment.

In this code?
There are many more things wrong with this code. Since this is a homework assignment, you'll have plenty of opportunity to clean them up so you can transform this from a C- to an A.

I won't point out the defects, because it's your homework assignment. I don't normally just slam someone's work without being specific, but I felt a warning was necessary.

Three weeks from today (if I remember and if the moderator doesn't lock the thread, please please) I will come back and explain.

Well the point is the printf family of functions (fprintf,sprintf,etc) provide ready to use easy format conversions. The integer variable itself I used is constant but it's representation changes via the format specifier as desired.

I cut out and have inserted this piece of a code from the project which wrote at studying of programming language C. It is simply indicative example. I would consider that he has helped you to understand a principle and on the basis of this principle already to realise that what you want. I have made something not so?

Yes and no. The other things I wish to say about the code are not of vital importance, and I intend to address them in three weeks, past the likely homework due date.

2wje_lq:

Sorry, maybe be I do not understand that? But what you mean under "homework"? I newbee at a forum also am in easy misunderstanding.
Sorry again.

Homework is something a teacher gives you, and that YOU should complete by yourself, and not have us do it for you. Why ? Because it's actually bad for you, what are you gonna do on the test ? We're not gonna be there with you.

Either way for this I agree with johnsfine, use printf or sprintf.

Take a look here, it even gives you an example:
http://www.cplusplus.com/reference/c...o/sprintf.html

It concerns me? Y/N?

P.S. It seems I have problem with English....:-(

Actually, your English is pretty good. My Russian is nonexistent, so you're way ahead of me!

And the only way the homework issue affects you is that we try to avoid giving source examples to people like SpLaSh212 who are completing homework assignments, because they should write the code themselves.

Once they've done that, if they have questions about why their code doesn't work, then we jump in and help.

Any other way, and they'd never learn anything.

Thank you, wje_lq! You have given to my to hope.

I simply did not know that here such rules. In Russia peoples like SpLaSh212 have name "students".

I will be corrected in future!