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Author: seemantaggarwal

math/C++/prime number.cpp

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+#include <iostream>
+using namespace std;
+
+int main()
+{
+  int n, i;
+  bool isPrime = true;
+
+  cout << "Enter a positive integer: ";
+  cin >> n;
+
+  for(i = 2; i <= n / 2; ++i)
+  {
+      if(n % i == 0)
+      {
+          isPrime = false;
+          break;
+      }
+  }
+  if (isPrime)
+      cout << "This is a prime number";
+  else
+      cout << "This is not a prime number";
+
+  return 0;
+}