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How do I write programs in C?
What is a variable in C, and how do I declare one?
A variable is a storage location in your program that holds a value. In C, you need to declare a variable before you use it. To declare a variable, you specify its data type (like int or float) and give it a name. Here's an example:

int number;

This declares an integer variable named "number". You can then assign a value to it using the assignment operator (=).