2011年5月2日 · Java.util.collections methods usually use the boxed (Object-wrapped) versions, because they need to work for any Object, and a primitive type, like int or long, is not an Object. Another difference is that long and int are pass-by-value, whereas Long and Integer are pass-by-reference value, like all non-primitive Java

2010年1月24日 · According to C99 standard, long long is an integer type which is at least 64-bit wide. There are two integer 64-bit types specified: long long int and unsigned long long int. So, yes, this is the biggest integer type specified by C language standard (C99 version). There is also long double type specified by C99. It's an extended precision ...

2013年9月24日 · Hence long on its own is neither a type nor a modifier as your question posits, it's simply a specifier for the long int type. Ditto for long long being a specifier for the long long int type. Although the C++ standard itself doesn't specify the minimum ranges of integral types, it does cite C99, in 1.2 Normative references , as applying.

I noticed stuff called "long int" or even "long long"! Is it a data type or a modifier? long int is the same as long (just as short int is the same as short). long long is a distinct data type introduced by several compilers and adopted by C++0x. Note that there is no such thing as long long long: error: 'long long long' is too long for GCC

The letters 100000000000 make up a literal integer constant, but the value is too large for the type int. You need to use a suffix to change the type of the literal, i.e. long long num3 = 100000000000LL; The suffix LL makes the literal into type long long. C is not "smart" enough to conclude this from the type on the left, the type is a ...

2011年6月15日 · In most platforms, a long long represents a 64-bit signed integer type. You could use long long to store the 8-byte value safely in most conventional platforms, but it's better to use int64_t / int_least64_t from <stdint.h> / <cstdint> to clarify that …

2017年11月12日 · long forces the result to a long int (extended precision), regardless of the magnitude. So int(1) and long(1) aren't the same. In Python 3, the distinction is more internal, but in Python 2, the difference is visible when you display the numbers.

The Max value of the default Int in Python 2 is 65535, anything above that will be a long. For example: >> print type(65535) <type 'int'> >>> print type(65536*65536) <type 'long'> In Python 3 the long datatype has been removed and all integer values are handled by the Int class. The default size of Int will depend on your CPU architecture. For ...

2014年4月14日 · The type of an unsuffixed integer constant like 131071100 is the first of int, long int, and long long int in which its value can be represented. The value of 131071100 is always mathematically correct; only its type varies (and since long int is at least 32 bits, it's always either an int or a long int ).

2009年5月23日 · The long must be at least the same size as an int, and possibly, but not necessarily, longer. On common 32-bit systems, both int and long are 4-bytes/32-bits, and this is valid according to the C++ spec. On other systems, both int and long long may be a different size. I used to work on a platform where int was 2-bytes, and long was 4-bytes.