Compress Interleaved Bits Reverse Bit Spreading

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

uint8_t compress_bits(uint16_t val) {
    // Your logic here
     uint8_t i=0;
    uint8_t a=0;
    while(i<8){
        if((val&(1<<(2*i)))>0){
            a+=1<<i;
        }
        i++;


    }
    return a;
}

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

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