This program illustrates the swap() member function of the map interface.
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We begin by creating two maps.
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The first map has size 3 and contains the following pairs:
A 65
B 66
C 67
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The second map has size 7 and contains the following pairs:
D 68
E 69
F 70
G 71
H 72
I 73
J 74
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Now we swap the two maps using the swap() function from the map interface.
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After the swap the first map has size 7 and contains the following pairs:
D 68
E 69
F 70
G 71
H 72
I 73
J 74
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And the second map has size 3 and contains the following pairs:
A 65
B 66
C 67
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