Question

the coding language is in c++

An array named testScores has already been declared.

-size= 5
-data type = float
- the array has already been initialized these values: 77, 88.5, 90, 93, 71.5
-Write one statement to declare a pointer named: ptr
- in the same statement, assign the address to the testScores array to the pointer
-write one statement to output the memory address of the array element at testScores[0]
-Write a for loop to output the values in the testScores array declared above.
-assume the pointer holds the address of the first bite of the array
-use the pointer in the cout statement. In other words, dereference the pointer
- Include pointer arithmetic to move the pointer from one array element to the next

Answer 1

I have implemented the above steps in c++. I have added comments for each line in code for you to understand it.

Note: You may see the screenshot of code to have better understanding of the indentation.

C++ Code:

#include <iostream>
using namespace std;

//main function
int main()
{
    //initialize the float array
    float testScores[5] = {77, 88.5, 90, 93, 71.5};
  
    //assign a pointer to the array
    float *ptr = testScores;
  
    //output memory address of first element in array
    cout<<"Memory address of first element using & operator: "<<&testScores[0]<<endl;
    cout<<"Memory address of first element using pointer: "<<ptr<<endl;
  
    //display array elements using pointer in for loop
    cout<<"Array elements using pointer: \n";
    for(int i=0;i<5;i++)
    {
        //dereference pointer using *ptr and
        //add i for subsequent elements in array
        cout<<*(ptr+i)<<endl;
    }

    return 0;
}

Output:

Memory address of first element using & operator: 0x7fff98c6ecbo Memory address of first element using pointer: 0x7fff98c6ecbo Array elements using pointer: 88.5 93 71.5

Screenshot of code:

#include <iostream> 2 using namespace std; 4 //main function 5 int main() 6- { //initialize the float array float testScores[5] = {77, 88.5, 90, 93, 71.5}; //assign a pointer to the array float *ptr = testScores; I/output memory address of first element in array cout<<"Memory address of first element using & operator: "<<&testScores cout<<"Memory address of first element using pointer: "<<ptr<<endl; <<endl; OWN POCO VOWNLOCO //display array elements using pointer in for Loop cout<<"Array elements using pointer: \n"; for(int i=0;i<5;i++) //dereference pointer using *ptr and I/add i for subsequent elements in array cout<<*(ptr+i)<<endl; return;