Compress Interleaved Bits Reverse Bit Spreading

Code

#include <stdio.h>
#include <stdint.h>

uint8_t compress_bits(uint16_t val) 
{
    uint8_t num=0;
    for(int i=15,j=7;i>=0;i--)
    {
        if(i==0)
        {
            if(((val>>i)&1)==1)
            {
                num |=1<<j;
                j--;
            }
            else if(((val>>i)&1)==0)
            {
                num &=~(1<<j);
                j--;
            }
        }
        else if(i%2==0)
        {
            if(((val>>i)&1)==1)
            {
                num |=1<<j;
                j--;
            }
            else if(((val>>i)&1)==0)
            {
                num &=~(1<<j);
                j--;
            }
        }
    }
    // Your logic here
    return num;
}

int main() {
    uint16_t val;
    scanf("%hu", &val);

    uint8_t result = compress_bits(val);
    printf("%u", result);
    return 0;
}

Solving Approach