Language in C Interview Questions and Answers
Question: How to write a swap( ) function which swaps the values of the variables using bitwise operators.
Answer: Here is the swap( ) function.swap ( int *x, int *y ) { *x ^= *y ; *y ^= *x ; *x ^= *y ; } The swap( ) function uses the bitwise XOR operator and does not require any temporary variable for swapping. |
Save For Revision
Bookmark this item, mark it difficult, or place it in a revision set.
Log in to save bookmarks, difficult questions, and revision sets.
Is it helpful? Yes No
Most helpful rated by users:
- What will be the output of the following code?
void main ()
{ int i = 0 , a[3] ;
a[i] = i++;
printf ("%d",a[i]) ;
} - Why doesn't the following code give the desired result?
int x = 3000, y = 2000 ;
long int z = x * y ; - Why doesn't the following statement work?
char str[ ] = "Hello" ;
strcat ( str, '!' ) ; - How do I know how many elements an array can hold?
- How do I compare character data stored at two different memory locations?