I had a string element, using the string class, and I'm trying to
convert this to an integer. I took a substring of the string because
that is where the integer is located, and I tried to use atoi() on it,
but it seems atoi() accepts char* type variable, whereas what I have is
a string. I've tried searching for a method to convert a string to an
integer, but haven't found a clear answer and was hoping someone here
can help.
Thanks,
- Eli
6  4605 
Eli Luong wrote:
I had a string element, using the string class, and I'm trying to
convert this to an integer. I took a substring of the string because
that is where the integer is located, and I tried to use atoi() on it,
but it seems atoi() accepts char* type variable, whereas what I have
is a string. I've tried searching for a method to convert a string to
an integer, but haven't found a clear answer and was hoping someone
here can help.
Use 'strtol' instead of 'atoi' and read up on 'c_str' member of the
std::string class.
V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask
Eli Luong ha escrito:
I had a string element, using the string class, and I'm trying to
convert this to an integer. I took a substring of the string because
that is where the integer is located, and I tried to use atoi() on it,
but it seems atoi() accepts char* type variable, whereas what I have is
a string. I've tried searching for a method to convert a string to an
integer, but haven't found a clear answer and was hoping someone here
can help.
Thanks,
- Eli
I had to do something similar once
You can try to make a new function which creates a an array of char's
big enough to fit in anything you want and read the string element by
element copying it in your array. Once it is done you can use atoi.
First you must find the length of the string.
Note that im a newbie and there is probably an easier and more
effective way
The answer came before i finished my reply
Victor Bazarov <v.********@com acast.netwrote:
Eli Luong wrote:
>I had a string element, using the string class, and I'm trying to
convert this to an integer. I took a substring of the string because
that is where the integer is located, and I tried to use atoi() on it,
but it seems atoi() accepts char* type variable, whereas what I have
is a string. I've tried searching for a method to convert a string to
an integer, but haven't found a clear answer and was hoping someone
here can help.
Use 'strtol' instead of 'atoi' and read up on 'c_str' member of the
std::string class.
There is also the method using stringstreams given in the FAQ.
--
Marcus Kwok
Replace 'invalid' with 'net' to reply
Use 'strtol' instead of 'atoi' and read up on 'c_str' member of the
std::string class.
There is also the method using stringstreams given in the FAQ.
Thanks, I'll take a look at both of considerations.
Eli Luong wrote:
I had a string element, using the string class, and I'm trying to
convert this to an integer. I took a substring of the string because
that is where the integer is located, and I tried to use atoi() on it,
but it seems atoi() accepts char* type variable, whereas what I have is
a string. I've tried searching for a method to convert a string to an
integer, but haven't found a clear answer and was hoping someone here
can help.
Thanks,
- Eli
You may try boost::lexical_ cast like:
int aVal = boost::lexical_ cast<int>( "1234" ); http://www.boost.org/libs/conversion...t.htm#examples This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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Für emails Anweisung in der Adresse befolgen
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