echo program

+#include <iostream>
+using namespace std;
+
+int main(){
+	char* msg;
+	cout << "보낼 메시지를 입력하시오." << endl;
+	cin >> msg;
+	for (int i=0;i<sizeof(msg);i++){
+		cout << msg[i];
+	}
+	cout << endl;
+
+	if(msg == "exit"){
+		exit(10);
+	}
+
+	return 0;
+}
\ No newline at end of file