Bit Spreading Interleave Bits with Zeros

Code

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

uint16_t spread_bits(uint8_t val) {
    uint16_t reg = 0;
    int pos=0;
    while(val>0){
        if(val&1){
            reg|=(1<<pos);
        }
        val=val>>1;
        pos+=2;
    }
    return reg;
}

int main() {
    uint8_t val;
    scanf("%hhu", &val);

    uint16_t result = spread_bits(val);
    printf("%u", result);
    return 0;
}

Solving Approach