#include<conio.h>
#include<stdio.h>
void main()
{
int z,i;
printf("enter a number");
scanf("%d",&z);
while
{
if(z%i==0)
{
break;
}
i=i+1;
}
if(i==z)
{
printf("%d is a prime number",z);
}
else
{
printf("%d is not prime",z);
}
getch();
}
#include<stdio.h>
void main()
{
int z,i;
printf("enter a number");
scanf("%d",&z);
while
{
if(z%i==0)
{
break;
}
i=i+1;
}
if(i==z)
{
printf("%d is a prime number",z);
}
else
{
printf("%d is not prime",z);
}
getch();
}
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