How to detect a text in output?

[prako2]

For example: I get output like this (2nd below) and I want to output

cout << new8.xml <<endl;

after. Is it possible?

<file>new0.xml</file>
    <file>new1.xml</file>
    <file>new2.xml</file>
    <file>new3.xml</file>
    <file>new4.xml</file>
    <file>new5.xml</file>
    <file>new6.xml</file>
    <file>new7.xml</file>

[VictorN]

For example: I get output like this (2nd below) and I want to output

cout << new8.xml <<endl;

after. Is it possible?

    <file>new0.xml</file>
    <file>new1.xml</file>
    <file>new2.xml</file>
    <file>new3.xml</file>
    <file>new4.xml</file>
    <file>new5.xml</file>
    <file>new6.xml</file>
    <file>new7.xml</file>

Did you already try it?

[prako2]

No, because I don't know how to achieve this. But I probably could if I know how to find a file with the biggest number.

[VictorN]

No, because I don't know how to achieve this.

"achieve" what? Output?
Then make first the "second" output, and then the "first" one!

[prako2]

This is not exactly what I want. I want to find a file with the biggest number, increment it by 1 and then output.

[VictorN]

... I want to find a file with the biggest number, increment it by 1 and then output.

And with what part of this task do you have a problem? And what is this problem?

[prako2]

This:

But I probably could if I know how to find a file with the biggest number.

[VictorN]

Well, you could use CFileFind class to perform file searches (usually, among some file types).
Then you open every file and read it content up to the end to find the "biggest number" and save this number together with the file name in some buffer.
Now (after the search with CFileFind completed) you choose the biggest number and the corresponding file name.

[prako2]

Thanks, but I want to do it directly from output text.

[VictorN]

What do you mean by "directly from output text"?

[2kaud]

I think he means something like this:

const string out = "<file>new0.xml</file>
    <file>new1.xml</file>
    <file>new2.xml</file>
    <file>new3.xml</file>
    <file>new4.xml</file>
    <file>new5.xml</file>
    <file>new6.xml</file>
    <file>new7.xml</file>";

int hghnum = getHighnum(out);

where in this case hghnum would be 7
??

[VictorN]

Wow 2kaud! You definitely have a crystal ball in your hands!
But I don't...

[2kaud]

If my crystal ball gazing is somewhere near the mark, then consider:

#include <string>
#include <iostream>
#include <charconv>
#include <algorithm>
using namespace std;

size_t getHighnum(const string& out, const string& pre)
{
	size_t maxnum = 0;
	const auto strt = out.data() + pre.size();

	for (size_t off = 0; (off = out.find(pre, off)) != string::npos; off += pre.size()) {
		size_t num = 0;

		from_chars(strt + off, strt + off + out.size(), num);
		maxnum = max(maxnum, num);
	}

	return maxnum;
}

int main()
{
	const string out = R"(<file>new0.xml</file>
		<file>new1.xml</file>
		<file>new2.xml</file>
		<file>new3.xml</file>
		<file>new4.xml</file>
		<file>new5.xml</file>
		<file>new6.xml</file>
		<file>new7.xml</file>)";

	size_t hghnum = getHighnum(out, "new");

	cout << "Highest number found is " << hghnum << endl;
}

[Arjay]

@OP Hmm, invalid xml, not off to a good start.

[prako2]

Thank you 2kaud, very useful.