Compress Interleaved Bits Reverse Bit Spreading

Code

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

uint8_t compress_bits(uint16_t val) {
    uint8_t res = 0;

    for(int i = 0; i<8 ;i++){
        uint16_t extracted = (val >> (2*i)) & 1;
        res |= ((extracted&1) << i);    
    }
    return res;
}

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

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

Solving Approach