Final answer:
The question deals with recognizing file extensions for C (.c), C++ (.cpp), and C# (.cs) programming languages, crucial in managing source code files in a computing environment.
Step-by-step explanation:
The student's question focuses on recognizing file extensions of different programming languages, specifically C, C++, and C#. These file extensions are used to identify source code files associated with each programming language. The correct extensions are:
.c for C language source code files.
.cpp for C++ source code files.
.cs for C# source code files.
This information is crucial for organizing and handling these files in a computing environment, such as when compiling code or navigating through a project's file structure.
The three letters that must follow a soft c are e, i, and y. When the c is followed by any of these letters, it remains 'soft' and the resulting pronunciation is like an 's' sound. For example, in words like circle, cinder, and city, the c is pronounced as 's'.