Compress Interleaved Bits Reverse Bit Spreading

Code

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

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

    for(int i = 0; i < 16; i++) {
        uint8_t extractBit = (val >> (i * 2)) & 0x01;
        result |= extractBit << i;
    }
    return result;
}

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

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

Solving Approach