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 mask = 0 ;
    // create a mask from start to end
    for(int i=start ;i<=end;i++)
    {
        mask |= (1<<i);
    }
    return reg |mask ;
}

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