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interpreted. The type may be int, signed int, or unsigned int.
member_na The name of the bit-field.
me
width The number of bits in the bit-field. The width must be less than or
equal to the bit width of the specified type.
The variables defined with a predefined width are called bit fields. A bit field can hold
more than a single bit; for example, if you need a variable to store a value from 0 to 7, then you
can define a bit-field with a width of 3 bits as follows:
The above structure definition instructs the C compiler that the age variable is going to
struct
{
unsigned int age : 3;
} Age;
use only 3 bits to store the value. If you try to use more than 3 bits, then it will not allow you to do
so. Let us try the following example:
#include <stdio.h>
#include <string.h>
struct
{
unsigned int age : 3;
} Age;
int main( )
{
Age.age = 4;
printf( "Sizeof( Age ) : %d\n", sizeof(Age) );
printf( "Age.age : %d\n", Age.age );
Age.age = 7;
printf( "Age.age : %d\n", Age.age );
Age.age = 8;
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