Programming

/******************************************************************************/
/* Printing an unsigned character in bits                                       */

#include    <stdio.h>

void display_bits ( unsigned char );

int main()
{
    unsigned char x;                          /* Number to be printed in bits  */

    printf ( "Enter an unsigned character: " );
    scanf ( "%c", &x );
    display_bits ( x );
}

void display_bits ( unsigned char value )
{
    unsigned char i,
                 display_mask = 1 << ( 8 * sizeof(unsigned char) - 1 );
printf("%c\n",display_mask);
    /* The display_mask contains 1 shifted by the number of bits in int       */

    printf ( "%7c = ", value );

    for ( i = 1; i <= ( 8 * sizeof(unsigned char)); i++ )
    {
        putchar ( ( value & display_mask ) ? '1' : '0' );
        value <<= 1;

        if ( !( i % 8 ) )
            putchar ( ' ' );
    }

    putchar ( '\n' );
}

# Get bit
int bit=3; // bit from 0 to 31
unsigned int bitval=(1<<bit);

printf("Value of bit %u is %u\n", bit, bitval);

unsigned char value=255;
int bit=3;
unsigned char bitset=value & (1<<bit);

if(bitset) { printf("bit %d set\n", bit+1); }
else       { printf("bit %d unset\n", bit+1); }

scanf("%u", &x);

scanf("%c", &x);
x = x - '0';