Bit Spreading Interleave Bits with Zeros

Code

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

uint16_t spread_bits(uint8_t val) {
    uint16_t res;
    for(int i=0;i<8;i++){
        uint16_t ress = ((val>>i)&0x01);  
    
    res |= (ress<<(2*i));
    }
    return res;
    //return 0;
}

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

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

Solving Approach