luc112.c - bsc - Comprehensive codebase and coursework for the 4-year B.Sc. Computer Science Honours degree (WBSU)

luc112.c (797B)

      1 /* Rewrite the showbits() function using the _BV macro.
      2 */
      3 /* Let Us C, Chap- 21 (Operations on Bits), Qn No.: B(j) */
      4 
      5 /* This file is auto-generated by a bot. */
      6 /* This code is not compiled; it is for reference only. */
      7 
      8 
      9 #include <stdio.h>
     10 #include <stdlib.h>
     11 
     12 /* _BV(x) macro usually expands to (1 << x) */
     13 #define _BV(x) (1 << x)
     14 
     15 void showbits(unsigned char n);
     16 
     17 int main()
     18 {
     19     unsigned char num;
     20 
     21     printf("Enter an 8-bit number: ");
     22     scanf("%hhu", &num);
     23 
     24     printf("Binary representation: ");
     25     showbits(num);
     26     printf("\n");
     27 
     28     return 0;
     29 }
     30 
     31 void showbits(unsigned char n)
     32 {
     33     int i;
     34     unsigned char mask;
     35     
     36     for (i = 7; i >= 0; i--)
     37     {
     38         mask = _BV(i);
     39         if ((n & mask) == 0)
     40             printf("0");
     41         else
     42             printf("1");
     43     }
     44 }