Answer:
vec[0].push_back(10)
Explanation:
Given
Declaration: vector <int> vec
Required
Assign 10 to the first element
This can be done using the push_back keyword.
The syntax is: <em>vectorname[position].push_back(value); </em>
In this case:
vectorname = vec
position = 0 i.e. first element
value = 10
So, we have:
vec[0].push_back(10)
Answer:
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Explanation:
C. it can be used to power a home , office, or supply the electriacal grid.