Bit Spreading Interleave Bits with Zeros

Code

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

uint16_t spread_bits(uint8_t val) {
    // Your logic here
    unsigned int res = 0;
    for (unsigned int b = 0; b <= 8; b++){
        if (val & (1<< b)){
            res |= 1 << (b * 2);
        }
    } 
    return res;
}

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

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

Solving Approach