Bit Spreading Interleave Bits with Zeros

Code

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

uint16_t spread_bits(uint8_t val) {
    // Your logic here
    uint8_t reg[16]; 
    uint16_t reg_ = 0x0000;
    uint8_t val_arr[8];
    for(int i=0; i<8; i++){
        if((val>>i)&1){
            val_arr[i]=1;
        }
    }
    for(uint8_t i=0; i<16; i++){
        if(i%2==0){
            reg[i]=val_arr[i/2];
            if(reg[i]){
            reg_ |= (1<<i);
            }
        }
        
    }
    return reg_;
}

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

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

Solving Approach