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c++/Others/A map of word opposites, using strings..cpp

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+A map of word opposites, using strings.
+#include <iostream>
+#include <map>
+#include <string>
+using namespace std;
+
+int main()
+{
+  map<string, string> mapObject;
+  int i;
+
+  mapObject.insert(pair<string, string>("yes", "no"));
+  mapObject.insert(pair<string, string>("up", "down"));
+  mapObject.insert(pair<string, string>("left", "right"));
+  mapObject.insert(pair<string, string>("good", "bad"));
+
+  string s;
+  cout << "Enter word: ";
+  cin >> s;
+
+  map<string, string>::iterator p;
+  
+  p = mapObject.find(s);
+  if(p != mapObject.end()) 
+    cout << "Opposite: " << p->second;
+  else
+    cout << "Word not in map.\n";
+
+  return 0;
+}