prime no
#include<bits/stdc++.h>
using namespace std;
bool Is_Prime(long long x){
if(x%2==0)return false;
for(int i=3;i*i<=x;i+=2)
if(x%i==0)return false;
return true;
}
int main(){
long long x;
cin>>x;
if(Is_Prime(x))cout<<"Is Prime";
else cout<<"Is not Prime";
}
3.6
5
//JAVA Program to check whether the number entered by user is Prime or not.import java.util.Scanner;public class prime{ //class declaration public static void main(String[] args) { //main method declaration Scanner sc=new Scanner(System.in); //scanner class object creation System.out.println("Enter a number"); int n = sc.nextInt(); //taking a number n as input int count=0; for(int i = 1 ; i <=n ; i++) { if(n % i == 0) //condition for getting the factors of number n count=count+1; } if(count == 2) //if factors are two then, number is prime else not System.out.println("Prime Number"); else System.out.println("Not a Prime Number"); sc.close(); //closing scanner class(not mandatory but good practice) } //end of main method} //end of class
Thank you!
5
3.6
(5 Votes)
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