Compress Interleaved Bits Reverse Bit Spreading

Code

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

uint8_t compress_bits(uint16_t val) {
    // Your logic here
    int n=0;
    uint8_t res=0;
    uint8_t tmp=0;
    uint8_t i=0;

    while (n<16){
        tmp=val&1;
        if (n%2==0){
           res|=tmp<<i;
           i++;
        }
        val>>=1;
        n++;
    }
    return res;
}

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

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

Solving Approach