Question

How to find second value from first value in an unordered_map

Answer 1

Answer:

Unordered_map : unordered_map is an associated container that stores elements formed by the combination of key value and a mapped value. The key value is used to uniquely identify the element and mapped value is the content associated with the key. Both key and value can be of any type predefined or user-defined.

Answer 2

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Modern global warming is the result of an increase in magnitude of the so-called greenhouse effect, a warming of Earth's surface and lower atmosphere caused by the presence of water vapour, carbon dioxide, methane, nitrous oxides, and other greenhouse gases.