diff --git a/Prime.cpp b/Prime.cpp
new file mode 100644
index 0000000..8e250d6
--- /dev/null
+++ b/Prime.cpp
@@ -0,0 +1,18 @@
+#include <iostream>
+#include <cmath>
+#include "Prime.h"
+
+bool Prime::Judge(int num) {
+	if(num<=1) {
+		cout<<num<<"��������"<<endl;
+		return false;
+	}
+	for(int i=2;i<sqrt(num);i++) {
+		if((num%i)==0) {
+			cout<<num<<"��������"<<endl;
+			return false;
+		}
+	}
+	cout<<num<<"������"<<endl;
+	return true;
+}