Compress Interleaved Bits Reverse Bit Spreading

Code

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

uint8_t compress_bits(uint16_t val) {
    // Your logic here
    int i,sum=0,j=0;
    for(i=0;i<16;i++)
    {
        if((i%2)==0)
        {
            if((val>>i)&1)
            {
                sum=sum+pow(2,j);
            }
            j++;
        } 
    }
    return sum;
}

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

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

Solving Approach