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 spread = 0;
    uint8_t mask = 0;
    for(size_t idx = 0; idx<8; idx++){
        mask = (val & (1U << idx));
        spread |= ((uint16_t)mask) << idx; 
    }
    return spread;
}

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

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

Solving Approach