Answer Posted / nachiyappan

#include<stdio.h>
#include<conio.h>
void main()
{
int i,j,c,n=1;
clrscr();
printf(" no. 1 is neither a prime nor composite no.");
for(i=1;i<100;i++)
{
n=n+1;
c=0;
for(j=1;j<=n;j++)
{
if(n%j==0)
c=c+1;
}
if(c==2)
printf("\n no. %d is prime",n);
else
printf("\n no. %d is not prime",n);
}
getch();
}

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