Converting a String into an integer array

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Converting a String into an integer array

 
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Sep 20th, 2006
Hi,

I have a question which i have no idea how to do manage.

I need to convert a string in the format like "1 234 567" so i can do some calculations on the indvidual numbers.

What is the best way to do this?

Thanks
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Re: Converting a String into an integer array

 
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Sep 20th, 2006
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Originally Posted by champos View Post
Hi,

I have a question which i have no idea how to do manage.

I need to convert a string in the format like "1 234 567" so i can do some calculations on the indvidual numbers.

What is the best way to do this?

Thanks
Don't know is it the best way but you can do like this. Parse the string until the space (' ') and the number until the space convert to int element of array.
If you want to win, you must not loose (Alan Ford)
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Re: Converting a String into an integer array

 
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Sep 20th, 2006
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Originally Posted by andor View Post
Don't know is it the best way but you can do like this. Parse the string until the space (' ') and the number until the space convert to int element of array.
Thats what i thought i would be able to do but i couldn't get something like that to work. I am probably doing something wrong.

I thought something like below would do the trick but i keep getting cast errors.

while (*string != '\0')
{
for (i = 0; i < strlen(string); i++)
{
converted[i] = atoi((int)string[i]);
}
}
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Re: Converting a String into an integer array

 
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Sep 20th, 2006
Correct me if I'm wrong...but doesn't atoi() require a C-String as the argument?

C Syntax (Toggle Plain Text) 
  1. char input[20];
  2.  
  3. code...code...code...
  4.  
  5. atoi(input);
Last edited by FC Jamison; Sep 20th, 2006 at 11:11 am.
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Re: Converting a String into an integer array

 
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Sep 20th, 2006
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Originally Posted by FC Jamison View Post
Correct me if I'm wrong...but doesn't atoi() require a C-String as the argument?
it does. i wanted to see if it is possible to send a single part of the array string. ie string[0] then increment to string[1] and so on.
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Re: Converting a String into an integer array

 
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Sep 20th, 2006
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Originally Posted by champos View Post
Hi,

I have a question which i have no idea how to do manage.

I need to convert a string in the format like "1 234 567" so i can do some calculations on the indvidual numbers.

What is the best way to do this?

Thanks
Are you using C++ or C? if you're using C++ then investigate stringstreams, which can be found in the <sstream> library - stringstreams make this sort of thing really, really easy!
Last edited by Bench; Sep 20th, 2006 at 11:17 am.
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Re: Converting a String into an integer array

 
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Sep 20th, 2006
just c
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Re: Converting a String into an integer array

 
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Sep 20th, 2006
Look into sscanf()
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Re: Converting a String into an integer array

 
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Sep 20th, 2006
Could he use something like

C Syntax (Toggle Plain Text) 
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  2. static_cast<int>(string[0]) - 48
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Re: Converting a String into an integer array

 
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Sep 20th, 2006
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Originally Posted by FC Jamison View Post
Could he use something like

C Syntax (Toggle Plain Text) 
  1.  
  2. static_cast<int>(string[0]) - 48
I think you should avoid casts as much as possible unless there's no option left or it turns out to be less evil then the other option.
The key to eliminating bugs from your code is learning from your mistakes.
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