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

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));
}

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.

What is a Deque?

2 Answers  

---

Who developed c language?

0 Answers  

---

what is the use of ~ in c lang?????

3 Answers  

---

array of pointer pointer to array pointer to pointer

1 Answers   MAHINDRA,

---

In C program, at end of the program we will give as "return 0" and "return 1", what they indicate? Is it mandatory to specify them?

5 Answers  

---

Explain how can I make sure that my program is the only one accessing a file?

0 Answers  

---

Write a program that takes a 5 digit number and calculates 2 power that number and prints it.

1 Answers  

---

which will return integer? a) int*s ( ) b) ( int* ) s( ) c) int ( *s ) ( )

1 Answers   C DAC,

---

Mention four important string handling functions in c languages .

0 Answers  

---

Explain function pointer with exapmles.

2 Answers  

---

What is the scope of an external variable in c?

0 Answers  

---

How can I do graphics in c?

0 Answers  

---