Exercise 5.21 #250

ch05/ex5_21.cpp

@@ -5,23 +5,33 @@
 //  Created by pezy on 11/9/14.
 //  Copyright (c) 2014 pezy. All rights reserved.
 //
-//  @Brief  Revise the program from the exercise in 5.5.1(p. 191)
-//          so that it looks only for duplicated words that start with an uppercase letter. 
-//  @See    Exercise 5.20
+//  @Brief   Revise the program from the exercise in 5.5.1(p. 191)
+//           so that it looks only for duplicated words that start with an uppercase letter. 
+//  @See     Exercise 5.20
+//  @frank67 Rewrite using the 'continue' statement. See #250
 
 #include <iostream>
+using std::cin; using std::cout; using std::endl;
 #include <string>
-
-using std::cout; using std::cin; using std::endl; using std::string;
+using std::string;
 
 int main()
 {
-    string read, tmp;
-    while ( cin >> read )
-        if (read == tmp && isupper(read[0])) break;
-        else tmp = read;
-
-    if (cin.eof()) cout << "no word was repeated." << endl;
-    else cout << read << " occurs twice in succession." << endl;
-    return 0;
+	string str_read, str_prev;
+
+	while ( cin >> str_read ) {
+		if ( !isupper(str_read[0]) )
+			continue;
+		else if ( str_prev == str_read ) {
+			cout << str_read << " occurs twice in succession." << endl;
+			str_read="";
+			break;
+			}
+			else str_prev = str_read;
+	}
+
+	if( !str_read.empty() )
+		cout << "no word was repeated." << endl;
+
+	return 0;
 }