Bit Spreading Interleave Bits with Zeros

Code

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

uint16_t spread_bits(uint8_t val) {
    uint16_t val1;
    int j=0;
    for(int i=0;i<8;i++)
    {
        if((val & (1<<i)))
        {
            val1 |= (1<<j);
            val1 &= ~(1<<j+1);
        }
        else
        {
            val1 &= ~(1<<j);
            val1 &= ~(1<<j+1);
        }
        j = j+2;
    }
    return val1;
}

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

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

Solving Approach