Linuxteaching
- What is the size of Long in C?
- How big is long long C++?
- How big is a short C++?
- What is %lu in C?
- What is size of char in C?
- What are the 5 main data types?
- Why are int and long the same size?
- Is float always 32 bit?
- Can an int be negative C++?
- What is the range of integer?
- How many bytes is long?
- Is Long Long always 64 bit?
What is the size of Long in C?
Integer Types
| Type | Storage size | Value range |
|---|---|---|
| short | 2 bytes | -32,768 to 32,767 |
| unsigned short | 2 bytes | 0 to 65,535 |
| long | 8 bytes or (4bytes for 32 bit OS) | -9223372036854775808 to 9223372036854775807 |
| unsigned long | 8 bytes | 0 to 18446744073709551615 |
How big is long long C++?
Long
| Data Type | Size (in bytes) | Range |
|---|---|---|
| short int | 2 | -32,768 to 32,767 |
| long int | 4 | -2,147,483,648 to 2,147,483,647 |
| unsigned long int | 8 | 0 to 4,294,967,295 |
| long long int | 8 | -(2^63) to (2^63)-1 |
How big is a short C++?
Primitive Built-in Types
| Type | Typical Bit Width | Typical Range |
|---|---|---|
| short int | 2bytes | -32768 to 32767 |
| unsigned short int | 2bytes | 0 to 65,535 |
| signed short int | 2bytes | -32768 to 32767 |
| long int | 8bytes | -2,147,483,648 to 2,147,483,647 |
What is %lu in C?
lu is forat specifier for. long double format specifier. data type and format specifier in c. float format specifier in c. long double specifier in c.
What is size of char in C?
Main types
| Type | Minimum size (bits) | Format specifier |
|---|---|---|
| char | 8 | %c |
| signed char | 8 | %c (or %hhi for numerical output) |
| unsigned char | 8 | %c (or %hhu for numerical output) |
| short short int signed short signed short int | 16 | %hi or %hd |
What are the 5 main data types?
The data types to know are:
- String (or str or text). Used for a combination of any characters that appear on a keyboard, such as letters, numbers and symbols.
- Character (or char). Used for single letters.
- Integer (or int). Used for whole numbers.
- Float (or Real). ...
- Boolean (or bool).
Why are int and long the same size?
int and long are both 4 bytes (32 bits) and long long int is 8 bytes or 64 bits (atleast in C). Check this for more a demo on ideone (on gcc 4.8. 1). The standard only requires ints to be stored in at least 16 bits, and longs in 32 bits.
Is float always 32 bit?
It is depending on the compiler, rather than the machine mostly. The 'int pointer' size can be changed to 64 bits on 64 bits machines, since the memory address size is 64 bits. ... A float is then still a float too: usually we say it is 32 bits, but everyone is free to deviate from it.
Can an int be negative C++?
C and C++ are unusual amongst languages nowadays in making a distinction between signed and unsigned integers. An int is signed by default, meaning it can represent both positive and negative values. An unsigned is an integer that can never be negative.
What is the range of integer?
The INTEGER data type stores whole numbers that range from -2,147,483,647 to 2,147,483,647 for 9 or 10 digits of precision. The number 2,147,483,648 is a reserved value and cannot be used.
How many bytes is long?
Data Types and Sizes
| Type Name | 32–bit Size | 64–bit Size |
|---|---|---|
| short | 2 bytes | 2 bytes |
| int | 4 bytes | 4 bytes |
| long | 4 bytes | 8 bytes |
| long long | 8 bytes | 8 bytes |
Is Long Long always 64 bit?
No, C99 standard says that it will have at least 64 bits. ... You could use int64_t type if you need 64bits always assuming you have stdint.
