Sep 16, 2010 · You can store a bigger value in ulong than long, but no negative numbers allowed. A long value is stored in 64-bit,with its first digit to show if it's a positive/negative number. while ulong is also 64-bit, with all 64 bit to store the number. so the …

The next C++ version will officially support long long in a way that you won't need any suffix unless you explicitly want the force the literal's type to be at least long long. If the number cannot be represented in long the compiler will automatically try to use long long even without LL suffix. I believe this is the behaviour of C99 as well.

Sep 24, 2013 · For example, a long is 64 bits on Linux and 32 bits on Windows (this was done to keep backwards-compatability, allowing 32-bit programs to compile on 64-bit Windows without any changes). long int is a synonym for long. Later on, long long was introduced to mean "long (64 bits) on Windows for real this time". long long int is a synonym for this.

int and long were "unified" a few versions back. Before that it was possible to overflow an int through math ops. 3.x has further advanced this by eliminating long altogether and only having int. Python 2: sys.maxint contains the maximum value a Python int can hold. On a 64-bit Python 2.7, the size is 24 bytes. Check with sys.getsizeof().

May 2, 2011 · Long is the Object form of long, and Integer is the object form of int. The long uses 64 bits. The int uses 32 bits, and so can only hold numbers up to ±2 billion (-2 31 to +2 31-1). You should use long and int, except where you need to make use of methods inherited from Object, such as hashcode.

As others have answered, the "standards" all leave most of the details as "implementation defined" and only state that type "char" is at leat "char_bis" wide, and that "char <= short <= int <= long <= long long" (float and double are pretty much consistent with the IEEE floating point standards, and long double is typically same as double--but ...

Sep 18, 2011 · long long (in versions of the language that support it) is at least 64 bits; Each type in the above list is at least as wide as the previous type (but may well be the same). Thus it makes sense to use long if you need a type that's at least 32 bits, int if you need a type that's reasonably fast and at least 16 bits.

Mar 31, 2010 · First of all, the size of int/long is unspecified. So on your compiler, an int and a long might be the same, but this isn't universal across compilers. As for the difference between unsigned long and long: Assuming 4 bytes, a long has the range of -2,147,483,648 to 2,147,483,647. An unsigned long has the range of 0 to 4,294,967,295.

Jan 20, 2016 · Long.MAX_VALUE is 9223372036854775807 (9,223,372,036,854,775,807). If you were executing your function once per nanosecond, it would still take over 292 years to encounter this situation according to this source .

Jun 27, 2014 · not only lnog can convert into int,any type of class extends Number can convert to other Number type in general,here I will show you how to convert a long to int,other type vice versa. Long l = 1234567L; int i = org.springframework.util.NumberUtils.convertNumberToTargetClass(l, Integer.class);