Bit Spreading Interleave Bits with Zeros

Code

#include <stdio.h>
#include <stdint.h>
#define SET_BIT(reg, n) ((reg) |= 1 << (n))
#define CHECK_LAST_BIT(reg) ((reg) & 1U)
uint16_t spread_bits(uint8_t val) {
    // Your logic here
    uint16_t res = 0;
    for(int i = 0; i < 16; i++){
        if(i % 2 == 0){
            if(CHECK_LAST_BIT(val)){
                SET_BIT(res, i);
            }
            val = val >> 1U;
        }
    }

    return res;
}

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

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

Solving Approach