Compress Interleaved Bits Reverse Bit Spreading

Code

#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++){
        uint8_t bit = (val >> (2 * i)) & 1;
        res |= (bit << i);
    }
    return (uint8_t)res;
}

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

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

Solving Approach