Set Multiple Bits in 8-bit Register

Code

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

uint8_t set_range(uint8_t reg, uint8_t start, uint8_t end) 
{
    uint8_t result1 = reg;  

    for(int j = start; j <= end ; j++)
    {
        result1 |= (1 << j);
        //printf("%d ",result1);
    }
    return result1;
}

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

Solving Approach