Bit Spreading Interleave Bits with Zeros

Code

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

uint16_t spread_bits(uint8_t val) {
    uint16_t val_fin=0;
    

    for(int i=0; i<8;i++)
    {   
        uint16_t new_v=0;
        
        int ext=(val>>i)&1;

        if (ext==1)
            {
                int pos=(i*2);

                        val_fin|=(1<<pos);
            }

    }
    return val_fin;
}

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

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

Solving Approach