Difference between int and double

Question

I was wondering if someone could tell me why anyone would use int instead of double  It seems to be that double is much more flexible than int    Thanks

User · Answer

int is a binary representation of a whole number  double is a double-precision floating point number

User · Answer

int and double have different semantics  Consider division  1 2 is 0  1 0 2 0 is 0 5  In any given situation  one of those answers will be right and the other wrong   That said  there are programming languages  such as JavaScript  in which 64-bit float is the only numeric data type  You have to explicitly truncate some division results to get the same semantics as Java int  Languages such as Java that support integer types make truncation automatic for integer variables   In addition to having different semantics from double  int arithmetic is generally faster  and the smaller size  32 bits vs  64 bits  leads to more efficient use of caches and data transfer bandwidth

User · Answer

Operations on integers are exact  double is a floating point data type  and floating point operations are approximate whenever there s a fraction   double also takes up twice as much space as int in many implementations  e g  most 32-bit systems

User · Answer

Short answer    int uses up 4 bytes of memory  and it CANNOT contain a decimal   double uses 8 bytes of memory  Just different tools for different purposes

[int] Difference between int and double

Examples related to int

Examples related to double