#include <stdio.h>
int main()
{
    int i, start = 1, end = 50, isPrime;
    printf("Prime numbers between 1 to 50 are: \n");

    while (start <= end)
    {
        isPrime = 1;

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

        if (isPrime == 1)
            printf("%d, ", start);

        ++start;
    }
    return 0;
}