This program creates an empty map, places three key/value pairs into it,
then displays the values by accessing them via their keys.
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The newly created map is currently empty.
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After entering the three key/value pairs, the size of the map is now 3.
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If the component key is A, the component value is 65.
If the component key is B, the component value is 66.
If the component key is C, the component value is 67.
Press Enter to continue ...