write a program to print all the prime numbers from 1 to n

#include<stdio.h>
#include<conio.h>

int main()
{

    int N, i, j, isPrime, n;

    printf("To print all prime numbers between 1 to N\n");
    printf("Enter the value of N\n");
    scanf("%d",&N);


    printf("Prime numbers between %d to %d\n", 1, N);

    for(i = 2; i <= N; i++)
    {
        isPrime = 0;

        for(j = 2; j <= i/2; j++)
        {

            if(i % j == 0)
            {
                isPrime = 1;
                break;
            }
        }

        if(isPrime==0 && N!= 1)
            printf("%d ",i);
    }
    getch();
    return 0;
}