18. Set Multiple Bits in 8-bit Register

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

uint8_t set_range(uint8_t reg, uint8_t start, uint8_t end) {
    // Your code here
    int i = 0;
    /*for(i=0;i<8;i++)
    {
        if(start == i)
        {
            while(start<=end)
            {
                reg |= (0x01<<i);
                i++,start++;
            }
            break;
        }
    }*/
    return  reg | ((1<<(end-start)+1)-1)<<start;
}

int main() {
    uint8_t reg, start, end;
    scanf("%hhu %hhu %hhu", &reg, &start, &end);
    printf("%u", set_range(reg, start, end));
    return 0;
}