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Please help with atoi()

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Join Date: Oct 2005

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LordJayno

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Please help with atoi()

Nov 14th, 2005

i'm trying to convert a string into an integer by using atoi() function. but it gives me an error:
error C2664: 'atoi' : cannot convert parameter 1 from 'class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >' to 'const char *'
No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called

i've looked up how to use atoi() and i'm positive i'm using it right can someone offer some insight?

 Help with Code Tags 
 C Syntax (Toggle Plain Text) 
string b;
//b is given a value inbetween these two commands by way of
//a loop.
tree.Insert(atoi(b));
string b;
//b is given a value inbetween these two commands by way of
//a loop.
tree.Insert(atoi(b));

thanks for any help

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Join Date: Apr 2004

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Reputation: Dave Sinkula has a brilliant future

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Dave Sinkula Dave Sinkula is offline

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long time no c

Re: Please help with atoi()

Nov 14th, 2005

atoi needs a pointer to a C-style string.

 Help with Code Tags 
 C Syntax (Toggle Plain Text) 
tree.Insert(atoi(b.c_str()));
tree.Insert(atoi(b.c_str()));

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