Compress Interleaved Bits Reverse Bit Spreading

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

uint8_t compress_bits(uint16_t val) {
    // Your logic here
    uint8_t output = 0;
    //printf("%016b\n",val);
    for(int i=0;i<16;i+=2){ //Loop through every 2 bits
        //printf("%d\n",i);
        if(val & (1<<i)){ //If bit is set
            output |= (1<<i/2); //Add set bit to output at each bit
        }        
    }
    return output;
}

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

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