Number is prime or not
#include<stdio.h>
#include<conio.h>
void main()
{
int n,i=2,k=0;
clrscr();
printf("enter the number ");
scanf("%d",&n);
while(i<=n)
{
if(n%i==0)
{
k=k+1;
}
i++;
}
if(k>2)
printf("number is not prime");
else
printf("number is prime");
getch();
}
/*
output:-
-------------
enter the number 5
number is prime
*/
#include<conio.h>
void main()
{
int n,i=2,k=0;
clrscr();
printf("enter the number ");
scanf("%d",&n);
while(i<=n)
{
if(n%i==0)
{
k=k+1;
}
i++;
}
if(k>2)
printf("number is not prime");
else
printf("number is prime");
getch();
}
/*
output:-
-------------
enter the number 5
number is prime
*/
A Prime number is a natural number greater than 1 that is only divisible by either 1 or itself. All numbers other than prime numbers are known as composite numbers.
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