Compress Interleaved Bits Reverse Bit Spreading

Code

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

uint8_t compress_bits(uint16_t val) {
    uint8_t reconstruct=0 ;
    int i=14;
    while(i>=0) {
       reconstruct = reconstruct<<1 | ((val>>i) &1);
       i=i-2;
    }
    return reconstruct;
}

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

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

Solving Approach