printf("Please input the number N...>");
scanf("%d",&N);
div = 2;
while (div*div <= N)
{
if (N%div==0)
{
printf("%d is not a prime.\n", N);
isprime = 0;
break;
}
div+=1;
}
if (isprime == 1)
printf("%d is a prime.\n", N);
system("pause");
return 0;
}
--
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