Question

1.Explain how arrays allow you to easily work with multiple values.

2 Explain how for loops can be used to work effectively with elements in an array.

3 Provide an example of using a for loop without an array.

4 What is the main difference between standard array and a dynamic array?

5 How are elements added to a vector in C++?

6 How can you remove an element from a vector in C++?

7 Why pass a vector by reference?

Answer 1

Answer 1: Array is single variable where we can store the multiple  values. using that single variable we can access all the elements in the array

Answer 2: using loop we can access the values in the array. we can iterate the elements in array using the loop

Answer 3: adding sum of 1st 10 numbers. here we can use the loop to achieve this

int sum=0;

for(int i=0;i<10;i++)

sum=sum+i;

Answer 4: in standard array we can create the size with constant. dynamic array we can create the size using variable using functions like malloc,new,callco

Answer 5: in vector we have push_back() function to add elements to the vector

Answer 6: we have erase function to delete the element

Answer 7:if you want the changes to effect to the actual parameters than we will pass by reference

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