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C++ program to check if number is prime using function
#include<iostream>
using namespace std;
void isPrime(int no)
{
bool isPrime = true;
for(int i = 2; i <= no / 2; ++i)
{
if(no % i == 0)
{
isPrime = false;
break;
}
}
if (isPrime)
cout << "This is a prime number";
else
cout << "This is not a prime number";
}
int main()
{
int no;
cout<<"\n Enter any no : ";
cin>>no;
isPrime(no);
return 0;
}