Bit Spreading Interleave Bits with Zeros

Code

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

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

uint16_t spread_bits(uint8_t val) {
    // Your logic here
    uint16_t res;
    for(uint8_t i = 0; i < 16; i++){
        if(i % 2 != 0){
            RESET_BIT(res,i);
        }
        else{
            if((val >> (i/2)) & 1)SET_BIT(res,i);
            else RESET_BIT(res,i);
        }
    }
    return res;
}

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

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

Solving Approach