Bit Spreading Interleave Bits with Zeros

Code

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

uint16_t spread_bits(uint8_t val) {
    uint16_t res = 0; //0000_0000_0000_0000
    for(int i = 0; i <= 7; i++){
        //Extracct bit from val
        int temp = (val >> i) & 1;

        //Set bit in res
        res |= (temp << 2*i);

    }

    return res;
}

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

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

Solving Approach