Uses and when to use int16_t
, int32_t
, int64_t
and respectively short
, int
, long
.
There are too many damn types in C++. For integers when is it correct to use one over the other?
That's where int32_t comes in: it's an alias for whatever integer type your particular system has that is exactly 32 bits. Template: intN_t or uintN_t Where N is width of integer which can be 8, 16, 32, 64 or any other type width supported by the library.
If int = 16 bit then obviously there is no difference between int and int16_t. So since int cannot be less than 16 bit, we may assume that int is more than 16 bit. Being more than 16 bit makes it more useful than int16_t. After all, it can hold more values.
The __int8 data type is synonymous with type char , __int16 is synonymous with type short , and __int32 is synonymous with type int . The __int64 type is synonymous with type long long .
unit8_t means 8bits unsigned int(that is 8 bits of only positive integers) int16_t means 16 bit of signed int(int could be positive or negative). 8 bits = 1byte and 16bits = 2 bytes. 3.
Use the well-defined types when the precision is important. Use the less-determinate ones when it is not. It's never wrong to use the more precise ones. It sometimes leads to bugs when you use the flexible ones.
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