Is int 2 bytes or 4 bytes?
Is int 2 bytes or 4 bytes?
The size of an int is really compiler dependent. Back in the day, when processors were 16 bit, an int was 2 bytes. Nowadays, it’s most often 4 bytes on a 32-bit as well as 64-bit systems. Still, using sizeof(int) is the best way to get the size of an integer for the specific system the program is executed on.
Why size of int is 2 or 4 bytes?
So the reason why you are seeing an int as 4 bytes (32 bits), is because the code is compiled to be executed efficiently by a 32-bit CPU. If the same code were compiled for a 16-bit CPU the int may be 16 bits, and on a 64-bit CPU it may be 64 bits.
How many bytes does int a use?
64-bit UNIX applications
| Name | Length |
|---|---|
| pointer | 8 bytes |
| ptrdiff_t | 8 bytes |
| size_t | 8 bytes |
| time_t | 8 bytes |
How do you find the size of a variable in C?
The sizeof operator is the most common operator in C. It is a compile-time unary operator and used to compute the size of its operand. It returns the size of a variable. It can be applied to any data type, float type, pointer type variables.
Which of the following variable have data size of 2 bytes?
Integer Types
| Type | Storage size | Value range |
|---|---|---|
| signed char | 1 byte | -128 to 127 |
| int | 2 or 4 bytes | -32,768 to 32,767 or -2,147,483,648 to 2,147,483,647 |
| unsigned int | 2 or 4 bytes | 0 to 65,535 or 0 to 4,294,967,295 |
| short | 2 bytes | -32,768 to 32,767 |
What is size () in C?
The sizeof() function in C is a built-in function that is used to calculate the size (in bytes)that a data type occupies in the computer’s memory. Data type: The data type can be primitive (e.g., int , char , float ) or user-defined (e.g., struct ).
What is size of int data type?
four bytes
The int and unsigned int types have a size of four bytes.