How to Simulate Static Classes with Static Methods in C ?

How to Create a Class with Static Methods

In C , static classes, as seen in other languages like C#, are not directly supported. However, it is possible to create a class with static methods that imitate the behavior of a static class.

Creating a BitParser Class with Static Methods

Your example aims to create a BitParser class with a static method getBitAt. To achieve this:

1. Define the Class Header (BitParser.h):

   <code class="cpp">class BitParser
   {
   public:
     static bool getBitAt(int buffer, int bitIndex);
     
     // ... // Other methods (optional)
   
     // Disallow creating an instance of this object
     BitParser() = delete;
   };</code>

   • The static keyword before getBitAt marks it as a static method.
   • The private constructor (BitParser() = delete;) prevents creating instances of the class.

2. Implement the Static Method (BitParser.cpp):

   <code class="cpp">bool BitParser::getBitAt(int buffer, int bitIndex)
   {
     // ... // Determine if the bit at the specified index is set
     return isBitSet;
   }</code>

   • The static method getBitAt can be called directly without an object instantiation.

Usage:

<code class="cpp">cout << "bit 5 is " << BitParser::getBitAt(buffer, 5) << endl;</code>

Note:

Unlike in C#, where static classes cannot contain instances, you cannot completely prevent object creation in C . The private constructor approach discourages instantiation but does not eliminate it entirely.

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