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_val = 0;
    unsigned char bit;
    for(int index = 0; index < 8; index ++)
    {
        bit = (val >> index) & 1;
        if(bit == 1)
        {
            ret_val |= (1 << (index * 2));
        }
        else
        {
            ret_val &= ~(1 << (index * 2));
        }
    }
    return ret_val;
}

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

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

Solving Approach