Here are a few title options, keeping in mind your request for a question format: * Why Am I Getting a \"Not Declared in This Scope\" Error for my HelloWorld Function in C ? * C Error: \

Why Does the HelloWorld Function Result in a "Not Declared in This Scope" Error?

In C , functions must be declared or defined before they are used. When attempting to call the HelloWorld function within the main function, the compiler issues an error stating that HelloWorld is not declared in the current scope.

Resolution:

There are two approaches to resolve this issue:

1. Declare the Function:

If you only intend to call the function and not provide its definition within the same source file, you can simply declare the function prototype before the main function:

<code class="cpp">void HelloWorld();</code>

This declaration informs the compiler that a function named HelloWorld exists and takes no parameters.

2. Define the Function:

Alternatively, you can define the function, providing its implementation, before the main function:

<code class="cpp">void HelloWorld()
{
  cout << "Hello, World" << endl;
}</code>

This approach not only declares the function but also provides its definition, allowing the compiler to recognize the function when it is called.

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