Bit Spreading Interleave Bits with Zeros

Code

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

uint16_t spread_bits(uint8_t val) {
    // Your logic here
    uint16_t ret = 0;
    uint8_t idx=0;
    for(int i=0; i<16; i++) {
        if(i % 2 == 0) {
            uint8_t bit = ((val & (1 << idx)) != 0) ? 1 : 0; 
            if(bit == 1) {
                ret |= (1 << i);
            }
            idx++;
        }
    }

    return ret;
}

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

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

Solving Approach