diff --git a/0228/242.cpp b/0228/242.cpp
new file mode 100644
index 0000000..8620eda
--- /dev/null
+++ b/0228/242.cpp
@@ -0,0 +1,23 @@
+#include<iostream>
+using namespace std;
+
+int main(){
+	
+
+	for(int a=2;a<=100;a++){
+	
+	bool x=true;
+
+	for(int i=2;i*i<=a;i++)
+		if(a%i==0){
+
+			x=false;
+			break;
+		}
+		if(x){
+		cout<<a<<" ";
+		}
+	}
+	cout<<endl;
+	return 0;
+}