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 res = 0b0000;
    uint16_t tmp = 1U;
    for (int i = 0; i < 8; i++) {
        if (val & (1U<<i)) {
            res |= tmp;
        }

        tmp <<= 2; 
    }
    return res;
}

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

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

Solving Approach