Exercise 1) write c++ statements to allow the user to enter n, the number of val

Question

Exercise 1) write c++ statements to allow the user to enter n, the number of values to be processed; then allocate an anonymous array of n double values, storing its address in doublPtr

     Answer:

2) fill the annonymous array of exercise 1 with n input values, entered from the keyboard.

3) Compute and display the average of the values in the annonymous array of exercise 1

4)deallocate the storage of the anonymous array of exercise 1.

5) In ecercise 1, if the value of doubleptr is 1000 and double values are stored in 8 bytes, draw a memory map showing the address of the first few elements of the annonymous array.

6) Assuming the address are stored in 4 bytes and double value in 8 bytes, tell what output will be produced by the following statemnt:

double dubValues[] = { 1.1, 2.2, 3.3, 4.4, 5.5};

double * dubPtr = dubValues;

for (int=i; i<5; i++)

cout<<sizeof(dubPtr + i) <<"    "

       << sizeof(*(dubPtr +i))<< "   "

       << *(dubPtr + i) << endl;

Explanation / Answer

#include<iostream>
using namespace std;

void main(void)
{
double *doublPtr;
int n;
cout << "enter no of elements to be processed: " ;
cin>>n;
doublPtr =new double[n];
cout<<" ";
double total=0;
cout<<"Enter numbers: ";
for(int i=0; i<n; i++)
{
   cout<<"Enter "<<(i+1)<<" number: ";
   cin>>doublPtr[i];

   total+=doublPtr[i];
}

cout<<" Average is: "<<(double)(total/n)<<" ";

//arrays are freed-up like this
delete []doublPtr;
}

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