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In C programming, data types are essential as they define the type and size of data that variables can hold. Each variable in C must be declared with a specific data type, which determines the kind of data it can store and the operations that can be performed on it.
Basic Data Types
Integer (int)
The int data type is used to store whole numbers, both positive and negative, without any decimal points. The size of an int is typically 4 bytes, and it can store values ranging from -2,147,483,648 to 2,147,483,647. Example:
int myVar = 10;Copied!✕CopyCharacter (char)
The char data type is used to store single characters. It occupies 1 byte of memory and can store values from -128 to 127 or 0 to 255. Example:
char myLetter = 'A';Copied!✕CopyFloating Point (float)
The float data type is used to store decimal numbers with single precision. It occupies 4 bytes of memory and can store values in the range of 1.2E-38 to 3.4E+38. Example:
float myFloatNum = 5.99;Copied!✕CopyDouble Precision Floating Point (double)
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