# What is the difference between int long int and long long int?

## What is the difference between int long int and long long int?

A long int is a signed integral type that is at least 32 bits, while a long long or long long int is a signed integral type is at least 64 bits.

## Is long int same as int?

The basic difference between the type int and long is of their width where int is 32 bit, and long is 64 bits. The types int and long when counted in bytes instead of bits the type int is 4 bytes and the type long is just twice if type int i.e. 8 bytes.

What is a long int?

A long integer is a data type in computer science whose range is greater (sometimes even double) than that of the standard data type integer. Depending on the programming language and the computer machine processor, the size of the long integer will vary.

What is long and short int?

The minimum size for char is 8 bits, the minimum size for short and int is 16 bits, for long it is 32 bits and long long must contain at least 64 bits. The type int should be the integer type that the target processor is most efficiently working with. This allows great flexibility: for example, all types can be 64-bit.

### Why do we use long long?

The long long takes twice as much memory as long. In different systems, the allocated memory space differs. On Linux environment the long takes 64-bit (8-bytes) of space, and the long long takes 128-bits (16-bytes) of space. This is used when we want to deal with some large value of integers.

### Why are long and int the same?

As for long and int , it comes from times, where standard integer was 16bit, where long was 32 bit integer – and it indeed was longer than int . Show activity on this post. 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.

Why do we use long int?

Sometimes, the range of long is the same as int (32-bit systems; 64-bit Windows); then the main reason for using long or int is to match the interface to a particular API (because the types are still distinct, even if they support the same range).

How long is a long integer?

64-bit UNIX applications

Name Length
int 4 bytes
long 8 bytes
float 4 bytes
double 8 bytes

## What is difference between int and short?

short datatype is the variable range is more than byte but less than int and it also requires more memory than byte but less memory in comparison to int. The compiler automatically promotes the short variables to type int, if they are used in an expression and the value exceeds their range.

## What is difference between long and double in Java?

The main difference between long and double in Java is that long is a data type that stores 64 bit two’s complement integer while double is a data type that stores double prevision 64 bit IEEE 754 floating point. In brief, long is an integral type whereas double is a floating point type.

Is long int 32 or 64-bit?

int , long , ptr , and off_t are all 32 bits (4 bytes) in size. int is 32 bits in size. long , ptr , and off_t are all 64 bits (8 bytes) in size.

What is the difference between int and long?

– byte datatype has a range from -128 to 127 and it requires very little memory (only 1 byte). – short datatype is the variable range is more than byte but less than int and it also requires more memory than byte but less memory in comparison to int. – int datatype is the most preferred type for numeric values. – long datatype is less frequently used.

### When should I use long long int instead of int?

Use “int”. As its range is from -2^31 to +2^31. Around ~10^9. But in case of n~10^18. “int” wont work. So use “long long int”. And range can further be increased for 0<10^19. by using “unsigned long long int”. Also, as the size will increase, the computation time will also increase. Hope, it helps. 10 Likes.

### How do I convert from INT to long in Java?

– String value = “Hello123″; – String intValue = value.replaceAll (” [^0-9]”, “”); // returns 123 – // convert the string to an integer – int stringValue = Integer.parseInt (intValue);

What is the difference between int, INT16, INT32 and Int64?

Type Capacity Int16 — (-32,768 to +32,767) Int32 — (-2,147,483,648 to +2,147,483,647) Int64 — (-9,223,372,036,854,775,808 to +9,223,372,036,854,775,807) int and Int32 are indeed synonymous; int will be a little more familiar looking, Int32 makes the 32-bitness more explicit to those reading your code.