Answer Posted / dinesh kumar.s

#include<stdio.h>
#include<conio.h>
void main()
{
int i,j,k,a;
clrscr();
printf("program created by dinesh mca anna university\n");
printf("enter the number\n");
scanf("%d",&a);

j=a;

if( a%2==0 || a%3==0 )
{
for(i=2;i<=a;i++)
if(a%i==0)
if (i==j)
{
printf("prime number");
break;
}

else
{
printf("not");
break;
}
}
else
{
printf("prime number");

}

getch();
}

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