Answer Posted / venkat reddy

#include<stdio.h>
main()
{
int i,n,count=0;
printf("enter a no.");
scanf("%d",&n);
for(i=2;i<n;i++)

{
if(n%i==0)
{
count++;
}
}
if(count>1)
{
printf("not prime no.");

}
else
printf("prime");
}

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