When it comes to displaying programming code in a black theme, you can use the following HTML and CSS:

// Sample code snippet in C
#include
int main() {
std::cout << "Hello, World!" << std::endl;
return 0;
}
This code snippet is styled with a black background and white text to give it a sleek and modern look. You can customize the colors and styles in the CSS to suit your preferences.
Remember to use proper syntax highlighting tools or plugins when displaying code on websites or in documents to improve readability and maintain consistency.