Interested to Buy Any Domain ? << Click Here >> for more details...
how to set Nth bit of variable by using MACRO
- 3 Answers
- 27087 Views
- HCL, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / kirankumaryakkala
#define set(val,n) val|=1<<n //do left-shift then bitwise OR
logic is val|=1<<n
means,
first shift the value 1 to ntimes and do the bitwise or with
value.
u will get the answer
| Is This Answer Correct ? | 30 Yes | 6 No |
Answer / vikram
The above code is wrong it should be n-1 instead of n.
#include<stdio.h>
#define SET(val,n) (val|=1<<(n-1))
main()
{
int n = 256;
printf("%d",SET(n,1));
}
| Is This Answer Correct ? | 13 Yes | 8 No |
Answer / sunitha
/* macro to set Nth bit */
#define SET_N_BIT(x,n) x|((~(unsigned)0)>>(8-(n-n-1))<<n);
Try out this . this is optimised version for setting a bit
work for any bit upto 8 bits if u want for 32 bits than
replace 8 with 32.
| Is This Answer Correct ? | 3 Yes | 0 No |
how logic is used
Is it possible to pass an entire structure to functions?
What is malloc and calloc?
What is void pointers in c?
How do you write a program which produces its own source code as output?
How to implement a packet in C
write a c program to convert fahrenheit to celsius?
How old is c programming language?
palindrome for strings and numbers----Can anybody do the prog?
6 Answers CTS, TCS, Vipro Lifescience Pvt,
Write a program in C to reverse a number by recursive function?
DIFFERNCE BETWEEN THE C++ AND C LANGUAGE?
why little endian and big endian came?y they using differently? y they not used commonly ?wt is application of little and big ?
C 
