Print prime numbers

primes.c

#include <stdio.h>
#include <stdbool.h>

void printAllPrimes(int, int);

int main()
{
    int lower, higher;
    
    printf("Lower: ");
    scanf("%d", &lower);
    
    printf("Higher: ");
    scanf("%d", &higher);
    
    printAllPrimes(lower, higher);
    return 0;
}

void printAllPrimes(int lower, int higher)
{
    int x, i;
    bool isPrime;
    for (x = lower; x <= higher; x++)
    {
        isPrime = true;
        for (i = 2; i < x; i++)
        {
            if (x % i == 0)
            {
                isPrime = false;
                break;
            }
        }
        if (isPrime)
        {
            printf("%d ", x);
        }
    }
    printf("\n");
}