#include<stdio.h>
#include<math.h>
void main()
{
int i,num,flag=1;
printf("Enter a number \n");
scanf("%d",&num) ;
for(i=2;i<= sqrt(num);i++)
{
if (num%i==0)
{
printf("%d is not prime\n",num);
flag=0;
break;
}
}
if (flag==1)
printf ("%d is prime\n", num);
}
#include<math.h>
void main()
{
int i,num,flag=1;
printf("Enter a number \n");
scanf("%d",&num) ;
for(i=2;i<= sqrt(num);i++)
{
if (num%i==0)
{
printf("%d is not prime\n",num);
flag=0;
break;
}
}
if (flag==1)
printf ("%d is prime\n", num);
}
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