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
    /*
        reg |= used to set the bit
        (1 << (end - start + 1)) this shifts the number 1 left by (end - start + 1) bits
        ((1 << (end - start + 1)) - 1) << start  shift this sequence left by start positions to align it with the target bits in reg
    */
    reg |= ((1 << (end - start + 1)) - 1) << start;
    return reg;
}

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