02_replace_n_bits

1. Team Emertxe
Function and Pointer
Basics

2. Assignment 2

3. Assignment 2

4. Assignment 2
WAP to replace ‘n’ bits of a given number

5. WAP to replace ‘n’ bits of a given number
Input:
Assignment 2

6. WAP to replace ‘n’ bits of a given number
Input: Read integer ‘num’, number of bits ‘n’ and ‘val’
Assignment 2

7. WAP to replace ‘n’ bits of a given number
Input: Read integer ‘num’, number of bits ‘n’ and ‘val’
Output:
Assignment 2

8. WAP to replace ‘n’ bits of a given number
Input: Read integer ‘num’, number of bits ‘n’ and ‘val’
Output: Return the updated value of ‘num’ after replacing
‘n’ bits
Assignment 2

9. Example’s:
Assignment 2

10. Example’s:
➢ Input: num = 10 , n = 3 and val = 12
Assignment 2

11. Example’s:
➢ Input: num = 10 , n = 3 and val = 12
Step 1: Clear 3 bits from LSB of num 10 :
Assignment 2

12. Example’s:
➢ Input: num = 10 , n = 3 and val = 12
Step 1: Clear 3 bits from LSB of num 10 :
Assignment 2
0 0 0
1
0
1
0
0
0 0 0
0
0
1
0
0
num
num

13. Example’s:
➢ Input: num = 10 , n = 3 and val = 12
Step 2: Take 3 bits from LSB end of ‘val’ 12 :
Assignment 2
0 0 0
0
1
1
0
0
val

14. Example’s:
➢ Input: num = 10 , n = 3 and val = 12
Step 3: Replace those 3 bits in the LSB end of num 10 :
Assignment 2
0 0
0
0
1
1
0
0 0 0
1
12
Updated
‘num’

15. Example’s:
➢ Input: num = 15 , n = 2 and val = 1
Assignment 2

16. Example’s:
➢ Input: num = 15 , n = 2 and val = 1
Step 1: Clear 2 bits from LSB of num 15 :
Assignment 2

17. Example’s:
➢ Input: num = 15 , n = 2 and val = 1
Step 1: Clear 2 bits from LSB of num 15 :
Assignment 2
0 0 1
1
1
1
0
0
0 0 0
0
1
1
0
0
num
num

18. Example’s:
➢ Input: num = 15 , n = 2 and val = 1
Step 2: Take 2 bits from LSB end of val 1 :
Assignment 2
0 0 1
0
0
0
0
0
val

19. Example’s:
➢ Input: num = 15 , n = 2 and val = 1
Step 3: Replace those 2 bits in the LSB end of num 15 :
Assignment 2
1
0
0 1 13
1
0 0 1
0
0
Updated
‘num’

20. Example’s:
➢ Input: num = 7 , n = 1 and val = 2
Assignment 2

21. Example’s:
➢ Input: num = 7 , n = 1 and val = 2
Step 1: Clear 1 bit from LSB of num 7 :
Assignment 2

22. Example’s:
➢ Input: num = 7 , n = 1 and val = 2
Step 1: Clear 1 bit from LSB of num 7 :
Assignment 2
0 0 1
1
1
0
0
0
0 0 ?
1
1
0
0
0
num
num

23. Example’s:
➢ Input: num = 7 , n = 1 and val = 2
Step 1: Clear 1 bit from LSB of num 7 :
Assignment 2
0 0 1
1
1
0
0
0
0 0 0
1
1
0
0
0
num
num

24. Example’s:
➢ Input: num = 7 , n = 1 and val = 2
Step 2: Take 1 bit from LSB end of val 2 :
Assignment 2
0 0 0
1
0
0
0
0
val

25. Example’s:
➢ Input: num = 7 , n = 1 and val = 2
Step 3: Replace that 1 bit in the LSB end of num 7 :
Assignment 2
0
1 0 ?
1
0 0 0
0
0
Updated
‘num’

26. Example’s:
➢ Input: num = 7 , n = 1 and val = 2
Step 3: Replace that 1 bit in the LSB end of num 7 :
Assignment 2
0
1 0 6
1
0 0 0
0
0
Updated
‘num’

27. Example’s:
➢ Input: num = 8 , n = 2 and val = 7
Assignment 2

28. Example’s:
➢ Input: num = 8 , n = 2 and val = 7
Step 1: Clear 2 bits from LSB of num 8 :
Assignment 2

29. Example’s:
➢ Input: num = 8 , n = 2 and val = 7
Step 1: Clear 2 bits from LSB of num 8 :
Assignment 2
0 0 0
0
0
1
0
0
0 0 ?
?
0
1
0
0
num
num

30. Example’s:
➢ Input: num = 8 , n = 2 and val = 7
Step 1: Clear 2 bits from LSB of num 8 :
Assignment 2
0 0 0
0
1
0
0
0 0 0
0
1
0
0
num
num 0
0

31. Example’s:
➢ Input: num = 8 , n = 2 and val = 7
Step 2: Take 2 bits from LSB end of val 7 :
Assignment 2
0 0 1
1
1
0
0
0
val

32. Example’s:
➢ Input: num = 8 , n = 2 and val = 7
Step 3: Replace those 2 bits in the LSB end of num 8 :
Assignment 2
1
? ? ?
0
0 0 1
0
0
Updated
‘num’
1

33. Example’s:
➢ Input: num = 8 , n = 2 and val = 7
Step 3: Replace those 2 bits in the LSB end of num 8 :
Assignment 2
1
1 1 11
0
0 0 1
0
0
Updated
‘num’
1

34. Sample execution:-
Assignment 2

35. Sample execution:-
Assignment 2

36. Pre-requisites:-
Assignment 2

37. Pre-requisites:-
➢ Bitwise operators
Assignment 2

38. Pre-requisites:-
➢ Bitwise operators
➢ Functions
Assignment 2

39. Pre-requisites:-
➢ Bitwise operators
➢ Functions
Objective:-
Assignment 2

40. Pre-requisites:-
➢ Bitwise operators
➢ Functions
Objective:-
➢ To understand the concept of Bitwise operations.
Assignment 2

41. Team Emertxe
Thank you