Print all Prime numbers between First to last with C.

#include <stdio.h>

int main()
{
    int i, j, start, end;
    int isPrime;

    printf("Enter lower limit: ");
    scanf("%d", &start);
    printf("Enter upper limit: ");
    scanf("%d", &end);

    printf("All prime numbers between %d to %d are:\n", start, end);


    if (start < 2)
        start = 2;

    for (i = start; i <= end; i++)
    {

        isPrime = 1;

        for (j = 2; j <= i / 2; j++)
        {
   
            if (i % j == 0)
            {
                isPrime = 0;
                break;
            }
        }

        if (isPrime == 1)
        {
            printf("%d ", i);
        }
    }

    return 0;
}

Output:-

Enter lower limit : 10
Enter upper limit : 50
All prime numbers between 10 to 50 are :
11 13 17 19 23 29 31 37 41 43 47