Bit Spreading Interleave Bits with Zeros

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

uint16_t spread_bits(uint8_t val) {
    uint16_t a=0; int c=7;
     for(int8_t i=7;i>=0;i--)
     {
            a|=((val&(1<<i))<<c);
            c--;
     }
  
    return a;
}

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

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