A. PHP
B. Python
C. C++
D. Java

Solution

C. C++

Explanation

Notepad++ is primarily written in C++. It is an open-source text and source code editor that is designed for use on the Windows operating system. The development of Notepad++ is led by Don Ho, and it has gained popularity among programmers and developers for its lightweight nature, extensibility, and features tailored for code editing.