Question

Programming in C++

Write a program that prints the values in an array and the addresses of the array’s elements using four different techniques, as follows:

1. Array index notation using array name
2. Pointer/offset notation using array name
3. Array index notation using a pointer
4. Pointer/offset notation using a pointer

Learning Objectives

In this assignment, you will:

• Use functions with array and pointer arguments
• Use indexing and offset notations to access arrays

Requirements

Your code must use these eight functions, using these names (in addition to main):

1. printValuesNameIndex
2. printValuesPointerIndex
3. printValuesNameOffset
4. printValuesPointerOffset
5. printAddressesNameIndex
6. printAddressesPointerIndex
7. printAddressesNameOffset
8. printAddressesPointerOffset

Requirements for the printValuesNameIndex Function

Purpose:	This function prints the values in the array.
Parameter:	integer array (square bracket notation)
Algorithm:	Print the name of the function, then print the values of the input array with array index notation. You must use the parameter. Do not declare any other variables except a loop control variable.
Return value:	None

Requirements for the printValuesPointerIndex Function

Purpose:	This function prints the values in the array.
Parameter:	Pointer to an int array
Algorithm:	Print the name of the function, then print the values of the input array with pointer index notation. You must use the parameter. Do not declare any other variables except a loop control variable.
Return value:	None

Requirements for the printValuesNameOffset Function

Purpose:	This function prints the values in the array.
Parameter:	integer array (square bracket notation)
Algorithm:	Print the name of the function, then print the values of the input array with pointer offset notation using the array name. You must use the parameter. Do not declare any other variables except a loop control variable.
Return value:	None

Requirements for the printValuesPointerOffset Function

Purpose:	This function prints the values in the array.
Parameter:	Pointer to an int array
Algorithm:	Print the name of the function, then print the values of the input array with pointer offset notation using the pointer. You must use the parameter. Do not declare any other variables except a loop control variable.
Return value:	None

Requirements for the printAddressesNameIndex Function

Purpose:	This function prints the address of each element of the array.
Parameter:	integer array (square bracket notation)
Algorithm:	Print the name of the function, then print the address of each element of the array with array index notation. You must use the parameter. Do not declare any other variables except a loop control variable. Use the appropriate format control string for printing addresses.
Return value:	None

Requirements for the printAddressesPointerIndex Function

Purpose:	This function prints the address of each element of the array.
Parameter:	Pointer to an int array
Algorithm:	Print the name of the function, then print the address of each element of the array with pointer index notation. You must use the parameter. Do not declare any other variables except a loop control variable. Use the appropriate format control string for printing addresses.
Return value:	None

Requirements for the printAddressesNameOffset Function

Purpose:	This function prints the address of each element of the array.
Parameter:	integer array (square bracket notation)
Algorithm:	Print the name of the function, then print the address of each element of the array with pointer offset notation using the array name. You must use the parameter. Do not declare any other variables except a loop control variable. Use the appropriate format control string for printing addresses.
Return value:	None

Requirements for the printAddressesPointerOffset Function

Purpose:	This function prints the address of each element of the array.
Parameter:	Pointer to an int array
Algorithm:	Print the name of the function, then print the address of each element of the array with pointer offset notation using the pointer. You must use the parameter. Do not declare any other variables except a loop control variable. Use the appropriate format control string for printing addresses.
Return value:	None

Requirements for main:

1. Declare and initialize an integer array of size 5, using the values 10, 20, 30, 40 & 50.
2. Call each function with the appropriate argument.

Other Requirements for this Program

No other variables should be declared in main or in any function or in any function parameter list, except those explicitly noted in the instructions.

You must a symbolic constant for the array size wherever it is needed.

All output must display exactly as it appears in the sample run. Note that your actual addresses may differ.

Sample Run

Printing array values from function printValuesNameIndex

a[0] = 10

a[1] = 20

a[2] = 30

a[3] = 40

a[4] = 50

Printing array values from function printValuesPointerIndex

a[0] = 10

a[1] = 20

a[2] = 30

a[3] = 40

a[4] = 50

Printing array values from function printValuesNameOffset

a[0] = 10

a[1] = 20

a[2] = 30

a[3] = 40

a[4] = 50

Printing array values from function printValuesPointerOffset

a[0] = 10

a[1] = 20

a[2] = 30

a[3] = 40

a[4] = 50

Printing array addresses from function printAddressesNameIndex

&a[0] = 62fe00

&a[1] = 62fe04

&a[2] = 62fe08

&a[3] = 62fe0c

&a[4] = 62fe10

Printing array addresses from function printAddressesPointerIndex

&a[0] = 62fe00

&a[1] = 62fe04

&a[2] = 62fe08

&a[3] = 62fe0c

&a[4] = 62fe10

Printing array addresses from function printAddressesNameOffset

&a[0] = 62fe00

&a[1] = 62fe04

&a[2] = 62fe08

&a[3] = 62fe0c

&a[4] = 62fe10

Printing array addresses from function printAddressesPointerOffset

&a[0] = 62fe00

&a[1] = 62fe04

&a[2] = 62fe08

&a[3] = 62fe0c

&a[4] = 62fe10

Answer 1

C++ code for the above program specification is given below: FileName: array.cpp

#include<iostream>
#include<string>
#include<cmath>

using namespace std;

void printValuesNameIndex(int arr[], int n) {
   cout << "\nPrinting array values from function printValuesNameIndex\n";
   for(int i=0; i<n; i++) {
      cout << "a[" << i << "] = " << arr[i] << endl;
   }
}

void printValuesPointerIndex(int* ptr, int n) {
   cout << "\nPrinting array values from function printValuesPointerIndex\n";
   for(int i=0; i<n; i++) {
      cout << "a[" << i << "] = " << *ptr << endl;
      ptr++;
   }
}

void printValuesNameOffset(int arr[], int n) {
   cout << "\nPrinting array values from function printValuesNameOffset\n";
   for(int i=0; i<n; i++) {
      cout << "a[" << i << "] = " << *(arr + i) << endl;
   }
}

void printValuesPointerOffset(int* ptr, int n) {
   cout << "\nPrinting array values from function printValuesPointerOffset\n";
   for(int i=0; i<n; i++) {
      cout << "a[" << i << "] = " << *(ptr + i)  << endl;
   }
}

void printAddressesNameIndex(int arr[], int n) {
   cout << "\nPrinting array values from function printAddressesNameIndex\n";
   for(int i=0; i<n; i++) {
      cout << "&a[" << i << "] = " << &arr[i] << endl;
   }
}

void printAddressesPointerIndex(int* ptr, int n) {
   cout << "\nPrinting array values from function printAddressesPointerIndex\n";
   for(int i=0; i<n; i++) {
      cout << "&a[" << i << "] = " << ptr << endl;
      ptr++;
   }
}

void printAddressesNameOffset(int arr[], int n) {
   cout << "\nPrinting array values from function printAddressesNameOffset\n";
   for(int i=0; i<n; i++) {
      cout << "&a[" << i << "] = " << arr + i << endl;
   }
}

void printAddressesPointerOffset(int* ptr, int n) {
   cout << "\nPrinting array values from function printAddressesPointerOffset\n";
   for(int i=0; i<n; i++) {
      cout << "&a[" << i << "] = " << ptr + i << endl;
   }
}


int main() {
   int n;
   int arr[] = {10, 20, 30, 40, 50}; 
   n = sizeof(arr)/sizeof(int);
   int *ptr = arr;
   printValuesNameIndex(arr, n);
   printValuesPointerIndex(ptr, n);
   printValuesNameOffset(arr, n);
   ptr = arr;
   printValuesPointerOffset(ptr, n);
   printAddressesNameIndex(arr, n);
   ptr = arr;
   printAddressesPointerIndex(ptr, n);
   printAddressesNameOffset(arr, n);
   ptr = arr;
   printAddressesPointerOffset(ptr, n);
   return 0;
}