O'Reilly logo

Mastering C++ Programming by Jeganathan Swaminathan

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Code walkthrough

The following line declares a map with a string name as the key and a long mobile number as the value stored in the map:

map< string, long > contacts;

The following code snippet adds four contacts organized by name as the key:

 contacts[ "Jegan" ] = 1234567890; contacts[ "Meena" ] = 5784433221; contacts[ "Nitesh" ] = 4567891234; contacts[ "Sriram" ] = 8901122334;

The following line will try to locate the contact with the name, Sriram, in the contacts map; if Sriram is found, then the find() function will return the iterator pointing to the location of the key-value pair; otherwise it returns the contacts.end() position:

 auto pos = contacts.find( "Sriram" );

The following code verifies whether the iterator, pos, has reached ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required