push exit program from exit branch, B repository

@@ -4,11 +4,13 @@
 using namespace std;
 using namespace std;
 int main() {
 int main() {
 	string s;
 	string s;
+	cout << "if you enter 'exit', the program will exit";
 	while (true) {
 	while (true) {
 		cin >> s;
 		cin >> s;
-		cout << s << endl;
+		if(s=="exit"){
+			break;	
 		}
 		}
-		
+		cout << s << endl;
 	}
 	}
-
+	exit(100);
 }
 }
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