On Feb 5, 12:49 pm, Reetesh Mukul <reetesh.mu...@gmail.com> wrote:
You can try this:-
#include <iostream>
#include <sstream>
#include <cctype>
int main()
{
std::string s = "dsdhjsahdk dsdjdsaj 36782367 sdjdhak";
int j = 0;
std::stringstream cstr;
cstr << s;
int i = 0;
char ch;
while( cstr >> ch )
{
if( std::isdigit(ch) )
{
cstr.putback(ch);
break;
}
if( ( j = s.find(" ",j) )== std::string::npos )
{
cstr.seekg(-1);
break;
}
cstr.seekg(++j, std::ios::beg);
}
if(cstr)
{
cstr >> i;
}
std::cout << i;
return 0;
}
With Regards,
Reetesh Mukul
sparkydarky wrote:
I have a bunch of strings in a database that have in them a number I
want to extract. Here's the example code I've been working with:
AnsiString tmp = "AMjsdfdsdfj 457756 some description";
int firstDelim = 0;
int secondDelim = 0;
for(int i=0; i<=tmp.Length(); i++)
{
if(IsDelimiter(" ", tmp, i));
{
if ( firstDelim == 0 )
firstDelim = i;
else
{
secondDelim = i;
break;
}
}
if ( secondDelim > 0 )
break;
}
int str_length = secondDelim - firstDelim;
ShowMessage(tmp.SubString(firstDelim, str_length));
Can someone give me a hint how to get this to work? Is my code way
off, or is there a better way to do it? it's only about 1500 records
I need to do this on, so speed is not of greatest importance.
Mark
Depending on how he is using the contents, it would be much more
efficient to assign the entire thing to the stringstream and keep
extracting int type until failbit it set. When it is set, clear it and
extract it to string type. Repeat until eof bit is set.
The solution you posted may not be useful if the OP actually wants to
do something with the non integers.. at least not efficient
It may also be error prone if the OP wants to extract strings that
contain numbers in them...Example: hello#1
Where as if he knows the text will be used for extracting either text
or ints, seperated by whitespace, than he can try to extract an int
and extract a string when int extraction fails. That we he is able to
use the entire contents in one swoop.
Of course, the OP didn't really give specifics.
Actually the specification is not there. Indeed, there can be problems