Check for Prime number

#include <stdio.h>
int main()
{
        int prime=1,i,n;
        printf("Enter the prime number: ");
        scanf("%d",&n);
        if (n<=2)
                goto x;
        for(i=2; i<=n/2; i++)
        {
                if(n%i==0)
                {
                        x: prime = 0;
                        break;
                }
        }
        if(prime == 0)
               printf("Not prime!");
        else
                printf("Prime!");
        fflush(stdin);
        getchar();
        return 0;
}