Re: String assignement

[Ron Michael Khu]

Hi!
I dont know much about c++ but after playing around with ur code,
i discovered that u gave the assign() method a wrong value for the 
second parameter...
why dont u try   "ed-bg+1" ??
(remove the '-1' if u like)

i think the second parameter is count or len... not the end index
-Ron
HIToC wrote:
Hello all!
I have a string CMD_LN that may contain a substring within angle brackets.
I would like to assign another string IN_BRACKETS with the substring that is
contained within the angle brackets of CMD_LN if it is present.
I have written this code that should work:
// A_brack.cpp
#include <iostream>
#include <string>
int main(int argc, char* argv[])
{
        string                  cmd_ln, in_brackets;
        string::size_type       bg, ed;
        cmd_ln = "Hello <all>, hello world!\n";
        bg = cmd_ln.find('<');
        ed = cmd_ln.find('>', bg);
        if(bg != ed != string::npos) in_brackets.assign(cmd_ln, bg, ed);
        cout    <<"Starting string:\t" <<cmd_ln <<'\n'
                <<"Angle-brackets string:\t" <<in_brackets <<'\n'
                <<"bg:\t" <<bg <<"\ned:\t" <<ed <<'\n'
                <<cmd_ln[bg] <<' ' <<cmd_ln[ed] <<'\n';
        return  0;
}
The output should be:
Starting string:        Hello <all>, hello world!
Angle-brackets string:  <all>
bg:     6
ed:     10
< >
But...it is not; this is the output of the program:
Starting string:        Hello <all>, hello world!
Angle-brackets string:  <all>, hel
bg:     6
ed:     10
< >


Thanks!
 

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