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 result;
    int i;
    int j;
    int bit[8];

    for( i=7; i>=0; i-- ){
        bit[i] = (val >> i) & 1;
        //printf("bit (%d): %d\n", i, bit[i]);
        result <<= 2;
        result |= bit[i];
    }
    return result;
}

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

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

Solving Approach