Feb 13, 2014 · And you should find better textbooks. A textbook that says an int is 2 bytes (a) probably refers to an old system, and (b) fails to make it clear that the size will vary from one system to another. The best book on C is "The C Programming Language" by Kernighan and Ritchie, though it assumes some programming experience. See also question 18.10 of the comp.lang.c FAQ.

Nov 30, 2009 · To represent the largest value of an " int 4 bytes " on this architecture, you would need 32 ones, meaning (2 x 2^31) - 1 = 4294967295 for the "unsigned long int" data type.

Mar 14, 2012 · The only real difference here is the size. All of the int types here are signed integer values which have varying sizes Int16: 2 bytes Int32 and int: 4 bytes Int64 : 8 bytes There is one small difference between Int64 and the rest. On a 32 bit platform assignments to an Int64 storage location are not guaranteed to be atomic. It is guaranteed for all of the other types.

May 2, 2011 · int and long are primitive types, while Integer and Long are objects. Primitive types are more efficient, but sometimes you need to use objects; for example, Java's collection classes can only work with objects, so if you need a list of integers you have to make it a List<Integer>, for example (you can't use int in a List directly).

Nov 25, 2013 · Such declaration are really used !. Consider the signal function of the standard C library: void (* signal(int sig, void (*func)(int)))(int); the signal man page explains it is equivalent to the following typedef'd version: typedef void (*sig_t) (int); sig_t signal(int sig, sig_t func); A function that takes two args, and int and a sig_t function, and that returns the old sig function.

For each of the standard signed integer types, there exists a corresponding (but different) standard unsigned integer type: unsigned char, unsigned short int, unsigned int, unsigned long int, and unsigned long long int, each of which occupies the same amount of storage and has the same alignment requirements.

Jan 25, 2013 · I came across the data type int32_t in a C program recently. I know that it stores 32 bits, but don't int and int32 do the same? Also, I want to use char in a program. Can I use int8_t instead? What is the difference? To summarize: what is the difference between int32, int, int32_t, int8 and int8_t in C?

Nov 21, 2012 · I used oracle dictionary views to find out column differences if any between two schema's. While syncing data type discrepancies I found that both NUMBER and INTEGER data types stored in all_tab_co...

Feb 14, 2020 · The C language definition specifies minimum ranges for various data types. For int, this minimum range is -32767 to 32767, meaning an int must be at least 16 bits wide. An implementation is free to provide a wider int type with a correspondingly wider range.

int is a primitive data type while Integer is a Reference or Wrapper Type (Class) in Java. after java 1.5 which introduce the concept of autoboxing and unboxing you can initialize both int or Integer like this.