Bit Spreading Interleave Bits with Zeros

Code

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

int is_bit_set(uint8_t reg, uint8_t pos)
{
    if(reg & (1<<pos))
    {
        return 1;
    }
    return 0;
}
uint16_t spread_bits(uint8_t val) 
{
    uint16_t temp = 0;
    for(int i = 0; i< 8; i++)
    {
        if(is_bit_set(val, i))
        {
            temp |= (1 << (i*2));
        }
    }    
    return temp;
}

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

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

Solving Approach