What's the difference between a long int and an unsigned int?

The argument is interpreted as a short int or unsigned short int (only applies to integer specifiers: i, d, o, u, x and X). The argument is interpreted as a long int or unsigned long int for integer specifiers (i, d, o, u, x and X), and as a wide character or wide character string for specifiers c and s.
Likewise, what is the difference between int and long?
The basic difference between the type int and long is of their width where int is 32 bit, and long is 64 bits. The types int and long when counted in bytes instead of bits the type int is 4 bytes and the type long is just twice if type int i.e. 8 bytes.
Indeed, what is the maximum value of an int? In computing. The number 2,147,483,647 (or hexadecimal 7FFF,FFFF 16) is the maximum positive value for a 32-bit signed binary integer in computing. It is therefore the maximum value for variables declared as integers (e.g., as int) in many programming languages, and the maximum possible score, money, etc. for many video games.
Consequently, is the unsigned datatype the same as the unsigned int?
From the C specification, section 6.7.2: Meaning that unsigned, when not specified the type, shall default to unsigned int. So writing unsigned a is the same as unsigned int a. Thanks for contributing an answer to Stack Overflow!
Next, do you need to cast from unsigned int to unsigned char?
Even doing this, you will need the cast from unsigned int to unsigned char, because the compiler will ultimately still think that you didn't mean to down-convert the way that you did. The warning is telling you that what you are doing isn't defined in all cases.

18 Similar Question Found

What is signed int and unsigned int?

An unsigned variable type of int can hold zero and positive numbers, and a signed int holds negative, zero and positive numbers. In 32-bit integers, an unsigned integer has a range of 0 to 2 32 -1 = 0 to 4,294,967,295 or about 4 billion.

Is the unsigned int the same as the short int?

Thus, the int type is equivalent to either the short int or the long int type, and the unsigned int type is equivalent to either the unsigned short or the unsigned long type, depending on the target environment. The int types all represent signed values unless specified otherwise.

What's the difference between unsigned int and signed int?

In this article, we have discussed unsigned int in C programming language. Unsigned int is a data type that can store the data values from zero to positive numbers whereas signed int can store negative values also.

Which is better int x or unsigned int y?

If one needs to compare int x with unsigned int y which is safer/better/nicer in C99 and with gcc 4.4+: Does it matter? Yes, it does matter.

How to convert signed 32-bit int to unsigned 32 bit int?

How to convert signed 32-bit int to unsigned 32-bit int? This is what I have, currently. Is there any nicer way to do this? Not sure if it's "nicer" or not... Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Provide details and share your research! But avoid …

Can you cast from unsigned int to signed int?

Regular type casting should be fine for that. Of course if it's a negative number you will end up with some strange results. You should be able to implicitly cast from unsigned to signed and vice versa. Though you can also safely explicitly cast using the static_cast like you are.

What's the difference between unsigned u8 and unsigned u16?

says that U8 is a unsigned 8 bit number, U16 is unsigned 16-bit number. By using U8 etc., I guess, we want to make sure only specific number of bits used to represent a unsigned number. varying bit-length of "short", "long" etc. on different platform. Is my understanding correct? If not, what's the whole purpose of using it?

What happens when you convert unsigned long to unsigned long?

For conversion to unsigned long or unsigned long long, the result of converting an out-of-range value may be some value other than the highest or lowest representable value. Whether the result is a sentinel or saturated value or not depends on the compiler options and target architecture.

How to convert unsigned 16 bit integer to unsigned 32 bit integer?

(In this case, there is nothing remarkable about lvalue conversion; the object uint16_t b would simply become a uint16_t value, so the type is uint16_t .) The type of uint16_t is, of course, an unsigned 16-bit integer, per 7.20.1.1 1:

Which is the maximum value of an unsigned int?

Indeed, for example on a 16-bit microprocessor we have as maximum values: int = 32767 -> 1 more = -32768 ; 2 more = -32767; unsigned int = 65535 -> 1 more = 0 ; 2 more = 1

Why do i use unsigned long instead of int in printf?

I used unsigned long rather than unsigned int because unsigned int can legally be only 16 bits wide. unsigned long is guaranteed to be at least 32 bits wide, so it can hold any possible value of type u32 (assuming u32 is defined sanely). For a 64-bit unsigned type, you can safely use unsigned long long and "%llu".

What's the minimum value of an unsigned short int?

The minimum value that can be stored in unsigned short int is zero. In case of overflow or underflow of data type, the value is wrapped around. For example, if 0 is stored in an unsigned short int data type and 1 is subtracted from it, the value in that variable will become equal to 65535.

How to write an unsigned short int literal?

unsigned short bar = static_cast<unsigned short>(23); for get an constant of type unsigned short. There are no modifiers for unsigned short. Integers, which has int type by default, usually implicitly converted to target type with no problems.

Why is u64 used instead of unsigned int?

u64 means an 'unsigned 64 bits' value, so, depending on the architecture where the code will run/be compiled, it must be defined differently in order to really be 64 bits long. For instance, on a x86 machine, an unsigned long is 64 bits long, so u64 for that machine could be defined as follows: typedef unsigned long u64; The same applies for u32.

Is an int the same as unsigned or signed?

int and unsigned int are two distinct integer types. (int can also be referred to as signed int, or just signed; unsigned int can also be referred to as unsigned .) As the names imply, int is a signed integer type, and unsigned int is an unsigned integer type.

What is the size of unsigned long int?

Executive summary: it's 64 bits, or larger. unsigned long long is the same as unsigned long long int. Its size is platform-dependent, but guaranteed by the C standard (ISO C99) to be at least 64 bits.

How long is an unsigned int in x86?

On a x86 machine, unsigned int is 32 bits long, so u32 for that machine could be defined as follows: typedef unsigned int u32; You'll generally find the typedef declaration for these types on a types.h file which corresponds to the architecture you're compiling your source to.

What is the range of unsigned int in c?

The range of unsigned int is 0 to 4294967295. Hence, 4294967296 which is 4294967295 + 1 gets wrapped around to 0. Integer datatype in C: int, short, long and long long - software engineering - OpenGenus Foundation. Start Discussion 0 replies.