C-Language Basics-Simple additions to data types

What to add:

Type descriptor: Long, long long, short, unsigned and signed

The type specifier is syntactically placed before the type of the declaring variable. For example, long int A is a variable A that declares a long integer.

1.long

The exact precision of a variable declared by long depends on the system, and on many systems the same range of values for type int and long int can be used to store integer values up to 32 bits wide (2 of 31 powers-1 or 2147483647). When declaring a long int type variable, you can add l after the integer constant, for example

long int numberofmax = 1122334455667L;

2.long Long

A long long declaration is a specified extension precision, which guarantees that the precision bit width is at least 64 bits, and the declared format is long long int numberofmax.

3.unsigned and signed

Apparently functionally opposite, unsigned is an unsigned, that is, not a negative number. unsigned int number This is number as a variable cannot be a negative number.

Type	Common examples	printf characters
Char	' A ', ' \ n '	%c
_bool	0,1	%i,%u
Shrot int		%hi,%hx,%ho
unsigned short int		%hu,%hx,%ho
Int	12,-100,0177 (octal), 0xffe0 (hex)	%i,%o,%x
Unsigend int	12u,100u,0xffu	%u,%o,%x
Long int	12l,-100,0xfffl	%li,%lx,%lo
unsigned long int	12ul,100ul,0xffeeul	%lu,%lx,%lo
Long Long int	0xe5e5e5e5ll,505ll	%lli,%llx,%llo
unsigned long long int	12ull,0xffeull	%llu,%llx,%llo
Float	12.34f,3.1e-5f,0x1.5p10,0x1p-1	%f,%e,%g,%a
Double	1.23,3.1e-5,0x.1p3	%f,%e,%g,%a
Long double	12.341,3.1e-5l	%lf,%le,%lg

C-Language Basics-Simple additions to data types