Write a program to swap odd and even bits in an integer with as few instructions as possible (e.g., bit 0 and bit 1 are swapped, bit 2 and bit 3 are swapped, etc).

#include<stdio.h>
main()
{
int n;
scanf("%d",&n);
printf("%d",( ((n & 0xaaaaaaaa) >> 1) | ((n & 0x55555555) << 1) ));
}
at

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