C++ Questions. Passing a vector to a function is by-value unless you use an & af

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C++ Questions.

Passing a vector to a function is by-value unless you use an & after the element type (like so: vector &). Given a vector declared as vector vec', answer each of the following: i) the vector contains ___ elements (how many? be exact!) ii) valid positions in the vector are in the range [__) iii) vec [5] represents the 5th element iv) vec represents the entire vector v) vec. front() represents the entire vector vi) the data type of vec[4] is ___ vii) the data type of the 4 used in subscript of #vi) is ___ viii) the data type of vec is ___ How does selection sort attempt to improve on bubble sort? They are both n^2 algorithms, what benefit might selection sort achieve? I can print any container by simply placing the container's name in a cout statement like this: cout

Explanation / Answer

1) TRUE-The pass by refernce is done only by using &

2)

i)infinite elements

ii)vec(first_element,past_last_element)

iii)FALSE

iv)True

v)False vec.front represents only the following function.

vii)int

viii)vector

3)Number of writes by bubble sort will be high when compared to the number of writes as selection sort .

4)True - the container cannot be printed by thegiving them in the cout statement

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