Compress Interleaved Bits Reverse Bit Spreading

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

uint8_t compress_bits(uint16_t val) {
    // Your logic here
    uint8_t res = 0; 

    for (int i = 0 ; i < 16 ; i+=2) {
        res |= ((val >> i) & 1) << i/2;
    }

    return (res & 0xFF);
}

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

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