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

    uint8_t result = reg;
    uint8_t mask = 1 << start;

    for(int i = start; i<=end; i++){
        result |= mask;
        mask = mask << 1;
    }
    return result;
}

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