Initial commit

c++/Others/A map of opposites..cpp

@@ -0,0 +1,64 @@
+A map of opposites.
+#include <iostream>
+#include <map>
+#include <cstring>
+using namespace std;
+
+class StringClass {
+  char str[20];
+public:
+  StringClass() { 
+     strcpy(str, ""); 
+  }
+  StringClass(char *s) { 
+     strcpy(str, s); 
+  }
+  char *get() { 
+     return str; 
+  }
+};
+
+// must define less than relative to StringClass objects
+bool operator<(StringClass a, StringClass b)
+{
+   return strcmp(a.get(), b.get()) < 0;
+}
+
+class opposite {
+  char str[20];
+public:
+  opposite() { 
+     strcmp(str, ""); 
+  }
+  opposite(char *s) { 
+     strcpy(str, s); 
+  }
+  char *get() { 
+     return str; 
+  }
+};
+
+
+int main()
+{
+  map<StringClass, opposite> mapObject;
+
+  mapObject.insert(pair<StringClass, opposite>(StringClass("yes"), opposite("no")));
+  mapObject.insert(pair<StringClass, opposite>(StringClass("good"), opposite("bad")));
+  mapObject.insert(pair<StringClass, opposite>(StringClass("left"), opposite("right")));
+  mapObject.insert(pair<StringClass, opposite>(StringClass("up"), opposite("down")));
+
+  char str[80];
+  cout << "Enter word: ";
+  cin >> str;
+
+  map<StringClass, opposite>::iterator p;
+  
+  p = mapObject.find(StringClass(str));
+  if(p != mapObject.end()) 
+    cout << "Opposite: " <<  p->second.get();
+  else
+    cout << "Word not in map.\n";
+
+  return 0;
+}