C Programming for Beginners – Chapter 06 : Data Types in C

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Data types are an important aspect of C programming that every beginner should understand. They help you specify the type of data that a variable in your program can hold. This information is important for the compiler, as it needs to know what kind of data it will be working with in order to produce the right results. In other words, if you want to store a number in your program, you would use a different data type than if you wanted to store a character or a decimal value.

There are several built-in data types in C, and they are each designed to store different types of data. Let’s take a closer look at some of the most common data types:

  1. Integer (int): This data type is used to store whole numbers, such as -1, 0, or 1. When you use an int data type, the compiler will allocate a certain amount of memory for storing your number.
  2. Floating-point number (float): If you need to store decimal values, such as 1.23 or -0.456, you would use a float data type. This data type uses a different method for storing numbers than the int data type, and it is usually more accurate for storing decimal values.
  3. Double-precision floating-point number (double): This data type is similar to float, but with more precision. It is designed for situations where you need to store very large or very small decimal values.
  4. Character (char): The char data type is used to store a single character, such as ‘a’ or ‘Z’. If you want to store a word or a sentence, you would use an array of characters instead.
  5. Void: This data type is used to declare a function that does not return a value. It is also used in other parts of your program when you don’t want to specify a data type.


By understanding these data types, you’ll be able to write more efficient and effective C programs. In other words, you’ll be able to specify the right data type for the right situation, and your programs will run faster and with fewer errors.

C Programming for Beginners – Chapter 06 : Data Types in C


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