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 reg = val;
    reg = (reg | (reg<<4)) & (0x0F0F);
    reg = (reg | (reg<<2)) & (0x3333);
    reg = (reg | (reg<<1)) & (0x5555);
    return reg;
}

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

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

Solving Approach