In Simple Program Using float Data Type
In C++, the main data types can be classified into the following categories:
1. Primitive Data Types:
int: Integer data type (e.g., int a = 5;)
float: Floating-point number (single precision) (e.g., float f = 3.14;)
double: Double precision floating-point number (e.g., double d = 3.14159;)
char: Character data type (e.g., char c = 'A';)
bool: Boolean data type (true or false) (e.g., bool b = true;)
wchar_t: Wide character data type (for representing wide characters) (e.g., wchar_t wc = L'A';)
2. Modifiers (used to modify the size and range of primitive data types):
signed: Represents both positive and negative values.
unsigned: Represents only positive values.
short: Short integer (e.g., short s = 5;)
long: Long integer (e.g., long l = 1000000;)
long long: Extended long integer type (e.g., long long ll = 10000000000;)
3. Derived Data Types:
array: A collection of elements of the same type (e.g., int arr[5];)
pointer: A variable that stores the address of another variable (e.g., int* ptr;)
reference: A reference to another variable (e.g., int& ref = a;)
4. User-defined Data Types:
struct: A collection of different data types grouped together (e.g., struct Person { int age; float height; };)
union: A special data structure that allows storing different data types in the same memory location (e.g., union Data { int i; float f; };)
enum: A data type used to define a set of named integer constants (e.g., enum Day { Sunday, Monday, Tuesday };)
class: A user-defined data type that represents a blueprint for objects (e.g., class Car { public: int speed; };)
typedef/using: Defines a new name for an existing type (e.g., typedef unsigned int uint;)
5. Void Type:
void: Represents an absence of type, used in functions that don't return a value (e.g., void func() {}).
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