Bit Spreading Interleave Bits with Zeros

Code

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

#define SET_BIT(r, b) ((r) |= (1 << (b)))

uint16_t spread_bits(uint8_t val) {
    // Your logic here
    uint16_t ans = 0;
    for (uint8_t i = 0; i < 8; i++) {
        if (val & (1 << i)) {
            SET_BIT(ans, 2*i);
        }
    }
    return ans;
}

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

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

Solving Approach