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#include <iostream> using namespace std; int main() {    int i,n;    int counter=0;    cin...

#include <iostream>

using namespace std;

int main()
{
   int i,n;
   int counter=0;
   cin >> n;
   for (i = 1; i <= n; i++)
   {

       if (n % i == 0 )
       {
           counter++;
       }

       /*else
       {
           counter++;
           i++;
       }*/
      
   }
   if (counter == 2)
       cout << n << " is a prime number with only 2 factors ( " << n << " and " << 1 << " )." << endl;
   else
       cout << n << " is not prime. It has more than 2. (" << 1 << " & " <<i<<","<< counter <<")"<< endl;
   return 0;
}

How do you modify this code for non-prime number.

For example, if the input is 4, I want it to display "4 is not a prime because it has more than 2 factors. (1,2,4).

engineering   Computer-Science   
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Homework Answers

Answer #1

If you have any doubts please comment below. Please give upvote if you like this.

Cpp Code:

#include <bits/stdc++.h>

using namespace std;

int main()
{
int i,n;
int counter=0;
cin >> n;
for (i = 1; i <= n; i++)
{

if (n % i == 0 )
{
counter++;
}
  
}
if (counter == 2)
cout << n << " is a prime number with only 2 factors ( " << n << " and " << 1 << " )." << endl;
else
{
        cout << n << " is not prime. It has more than 2. (";
        // loop for printing factors of n if n is non-prime
        for(int i=1;i<n;i++)
        {
            if(n%i==0) // condition for factor
              cout << i<<","; //display the factors
       }
       cout<<n<<")"<< endl;
}

return 0;
}

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