Compress Interleaved Bits Reverse Bit Spreading

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

uint8_t compress_bits(uint16_t val) {
    uint8_t temp=0,reg=0;
    for(int i = 0 ; i<16;i=i+2){
        temp = (val>>i) & 1;
        reg |= temp <<(i/2);
        //printf("%b    ",reg);
        //printf("%d\n",temp);
        temp = 0;
    }
    return reg;
}

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

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