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converting from char to int

Posted on 1998-08-31
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Last Modified: 2010-04-02
G'day,
I am in need of a method of converting a string to an integer.
Thanks,
Andrew
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Question by:galdes
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5 Comments
 
LVL 6

Expert Comment

by:snoegler
ID: 1171776
use atoi() (ascii to integer)
or atol(ascii to long)

Remember:
"1234" -> 1234
"12.34"-> 12
"-1234"-> -1234
"-12.34"-> -12
"12.75"-> 12
"-12.75"-> -12

And make sure that there are no leading spaces - as far as i know it is compiler dependent
if they are omitted or if simply '0' is returned.
I'll post this as a comment as i don't know if this answers your question - but just let me know
it if i should post an answer :)
0
 
LVL 23

Expert Comment

by:chensu
ID: 1171777
sscanf is also able to do so.
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Accepted Solution

by:
decornez earned 40 total points
ID: 1171778
For the purpose of locking.
Agree with snoegler & chensu.
can also use atof() to convert to double.
Cheers.
0
 
LVL 10

Expert Comment

by:viktornet
ID: 1171779
If you are using Borland C++ use StrToInt("12");

Regards,
Viktor Ivanov
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LVL 84

Expert Comment

by:ozo
ID: 1171780
decornez, what's the purpose of locking just to agree with snoegler & chensu?

(strlen and strtol also convert strings to intgers,
if the integers returned by atoi or sscanf don't happen to me the ones you want)
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