size [C++ Reference]
Keywords: stl,set,size
Date: 2008-10-14T15:42:10-0700

## size

Syntax:

        #include <set>
        size_type size() const;

The size() function returns the number of elements in the current set.

For example, the following code uses size() to determine the number of elements in a set:

         // Create a set of characters
         set<char> charSet;
         const char* s = "Hello There";
         for( int i=0; i < strlen(s); i++ ) {
           charSet.insert( s[i] );
         }
         // Display the size of the set
         cout << charSet.size();
         // output is "8" (the characters in the set are " HTehlor")

Related Topics: empty