Using an open source C++ library for converting Markdown to HTML would be a more robust solution.  An example of a C++ library that could be used for this is maddy. maddy is an MIT licensed header-only library that only depends on the C++ 14 standard library.

The `markdownToHtml` function could be reimplemented using the maddy library as follows:

```
#include <memory>
#include <sstream>
#include <string>

#include "maddy/parser.h"

std::string markdownToHtml(std::string& markdown) {
    std::stringstream markdownStream(markdown);
    auto parser = std::make_unique<maddy::Parser>();
    return parser->Parse(markdownStream);
}
```

To compile this code you will also need to add the headers for the "maddy" library to the include path. Depending on the compiler, build system or IDE being used, the process to change the include path may vary.

As an alternative you could also a C library such as MD4C. MD4C is an MIT licensed Markdown parser written in C. It is compliant to the CommonMark specification.
Using an open source C++ library for converting Markdown to HTML would be a more robust solution.  An example of a C++ library that could be used for this is maddy. maddy is an MIT licensed header-only library that only depends on the C++ 14 standard library.

The `markdownToHtml` function could be reimplemented using the maddy library as follows:

```
#include <memory>
#include <sstream>
#include <string>

#include "maddy/parser.h"

std::string markdownToHtml(std::string& markdown) {
    std::stringstream markdownStream(markdown);
    auto parser = std::make_unique<maddy::Parser>();
    return parser->Parse(markdownStream);
}
```

To compile this code you will also need to add the headers for the "maddy" library to the include path. Depending on the compiler, build system or IDE being used, the process to change the include path may vary.

As an alternative you could also a C library such as MD4C. MD4C is an MIT licensed Markdown parser written in C. It is compliant to the CommonMark specification.
user
The `markdownToHtml` function could be reimplemented using the MD4C library as follows:

```
#include <memory>
#include <sstream>
#include <string>

#include "md4c/md4c.h"

std::string markdownToHtml(std::string& markdown) {
    std::stringstream markdownStream(markdown);
    auto parser = std::make_unique<md4c::Parser>();
    return parser->Parse(markdownStream);
}
```

To compile this code you will also need to add the headers for the "md4c" library to the include path. Depending on the compiler, build system or IDE being used, the process to change the include path may vary.

Both the maddy and MD4C libraries provide a more robust and feature-rich solution for converting Markdown to HTML than the custom implementation in the original code. They are both well-tested, actively maintained and have a good track record of reliability and performance.
assistant
Using an open source C++ library for converting Markdown to HTML would be a more robust solution.  An example of a C++ library that could be used for this is maddy. maddy is an MIT licensed header-only library that only depends on the C++ 14 standard library.

The `markdownToHtml` function could be reimplemented using the maddy library as follows:

```
#include <memory>
#include <sstream>
#include <string>

#include "maddy/parser.h"

std::string markdownToHtml(std::string& markdown) {
    std::stringstream markdownStream(markdown);
    auto parser = std::make_unique<maddy::Parser>();
    return parser->Parse(markdownStream);
}
```

To compile this code you will also need to add the headers for the "maddy" library to the include path. Depending on the compiler, build system or IDE being used, the process to change the include path may vary.

As an alternative you could also a C library such as MD4C. MD4C is an MIT licensed Markdown parser written in C. It is compliant to the CommonMark specification.
user
The `markdownToHtml` function could be reimplemented using the MD4C library as follows:

```
#include <memory>
#include <sstream>
#include <string>

#include "md4c/md4c.h"

std::string markdownToHtml(std::string& markdown) {
    std::stringstream markdownStream(markdown);
    md4c_document_t* document = md4c_parse_stream(markdownStream);
    std::string html = md4c_document_to_html(document);
    md4c_free_document(document);
    return html;
}
```

To compile this code you will also need to add the headers for the "md4c" library to the include path. Depending on the compiler, build system or IDE being used, the process to change the include path may vary.

The MD4C library is a C library, so it may be more difficult to use with a C++ project. However, it is still a viable option for converting Markdown to HTML.

In conclusion, using an open source C++ library for converting Markdown to HTML would be a more robust solution. An example of a C++ library that could be used for this is maddy. maddy is an MIT licensed header-only library that only depends on the C++ 14 standard library. The `markdownToHtml` function could be reimplemented using the maddy library as follows:

```
#include <memory>
#include <sstream>
#include <string>

#include "maddy/parser.h"

std::string markdownToHtml(std::string& markdown) {
    std::stringstream markdownStream(markdown);
    auto parser = std::make_unique<maddy::Parser>();
    return parser->Parse(markdownStream);
}
```

To compile this code you will also need to add the headers for the "maddy" library to the include path. Depending on the compiler, build system or IDE being used, the process to change the include path may vary.

As an alternative you could also a C library such as MD4C. MD4C is an MIT licensed Markdown
assistant
Using an open source C++ library for converting Markdown to HTML would be a more robust solution.  An example of a C++ library that could be used for this is maddy. maddy is an MIT licensed header-only library that only depends on the C++ 14 standard library.

The `markdownToHtml` function could be reimplemented using the maddy library as follows:

```
#include <memory>
#include <sstream>
#include <string>

#include "maddy/parser.h"

std::string markdownToHtml(std::string& markdown) {
    std::stringstream markdownStream(markdown);
    auto parser = std::make_unique<maddy::Parser>();
    return parser->Parse(markdownStream);
}
```

To compile this code you will also need to add the headers for the "maddy" library to the include path. Depending on the compiler, build system or IDE being used, the process to change the include path may vary.

As an alternative you could also a C library such as MD4C. MD4C is an MIT licensed Markdown parser written in C. It is compliant to the CommonMark specification.
user
The `markdownToHtml` function could be reimplemented using the MD4C library as follows:

```
#include <memory>
#include <sstream>
#include <string>

#include "md4c/md4c.h"

std::string markdownToHtml(std::string& markdown) {
    std::stringstream markdownStream(markdown);
    auto parser = std::make_unique<md4c::Parser>();
    return parser->Parse(markdownStream);
}
```

To compile this code you will also need to add the headers for the "md4c" library to the include path. Depending on the compiler, build system or IDE being used, the process to change the include path may vary.

Both the maddy and MD4C libraries provide a more robust and feature-rich solution for converting Markdown to HTML than the custom implementation in the original code. They are both well-tested, actively maintained and have a good track record of reliability and performance.
assistant