the right most 10 characters of a string

[Paul McKenzie]

Originally posted by Guysl
Thanks.
I'm using the same headers but keep getting:
error C2679: binary '<<' : no operator defined....

I have the DX9 SDK installed too, with default project setting
uses its libs, could it be the reason? any idea?

Regards,
Guysl

I get no errors compiling the simple code with the proper headers. Maybe you've trashed (overwritten) your STL version with an older one where iostreams doesn't overload the std::string type, or your directory paths are pointing to this older version.

That's basically the problem with VC++'s "iostream.h" -- it knows nothing about std::string, so there was no operator << written for the VC++'s version "iostream.h".

Regards,

Paul McKenzie

[Yves M]

There must be a problem on your system. It compiles fine in my VC6 too. It's in the standard as well (21.2.2).

[Assmaster]

Originally posted by taguato
...
char result[10];
string Str("Hello Gurus, good day!");
int n = 10;

strcpy(result,Str.substr( Str.size() - n , n).c_str());
...

Is there any perticular reason you are using a char[10] and not a std::string?

std::string Result;
std::string Str("Hello Gurus, good day!");
int n = 10;

Result = Str.substr(Str.size() - n , n);

[Guysl]

Paul and Yves, thanks.
I've reinstalled VC++ , now strings output works fine.

Regards,
Guy

[taguato]

Why using char[10] and not std::string? well, it´s called inexperience.

I could not get my program to accept any of that sintax. I take it was because I did not include the right headers. The code snipped coming from jlou (I think) might shead some light: I am using <string.h>. I will try the one below.

Thanks again.

Luis

PS: btw: while we are at it, what do I have to include to use the CString class?

#include <iostream>
#include <string>
int main()
{
std::string myString = "Hello World!";
std::cout << myString << std::endl;
}

[taguato]

Hi gurus:

The code snipped, along with the "std::string Mystring" worked like a charm... amazing. Just for you guys to get a good laugh, this is what I have to do to get those darn 10 bytes off the string:

// -----------------------------------------------------------------------------------------
// RightS: Copies the rightmost NumChars characters from the string_in to string_out
// -----------------------------------------------------------------------------------------
void RightS(char*string_in,int NumChars, char*string_out)
{
char temp[80];

int length = strlen(string_in);
int i, start, ctr;

start = length - NumChars;

for (i = 0; i <= NumChars; i = i + 1)
{
ctr = start + i;
temp[i] = string_in[ctr];
}

temp[NumChars+1] = '\0';

strcpy(string_out,temp);
}

You can laugh, no problem. I know it´s bizarre, but.. you know, desperation is the mother of creativity, I guess.

But that little code snipped took it of it elegantly. And yes, it was <string>. the <string.h> it´s for something else... I write off as a good experience.

Thanks again,

Luis