Question

write a c++ program that prompts a user for a number then attempts to allocate an array of as many integers as the user enters. In other words, the program might prompt the user with a line like: “How many integers would you like to allocate?” It should then allocate as many integers as the user enters. The program should then wait for the user to press enter before deleting the allocated array and quitting. We will use this time to examine the program’s memory usage. Note that the amount of RAM allocated will be the number entered by the user times the size of an integer as reported from part 3.

part 3 says: Using the sizeof() operator, write a small program that prints out the size of an integer on your system.

Answer 1

#include<iostream>

#include <conio.h>

using namespace std;

int main()

{

int *arr;

int n;

//asking user for size

cout<<"How many integers would you like to allocate?";

cin>>n;

try

{

arr = new int [n];//allocating the size to array

cout<<"Memory allocated."<<endl;

getch();

delete [] arr;//delete the memory allocation

}

catch (bad_alloc)

{

cout << "ERROR:Cannot allocate memory.\n";

}

return 1;

}

output

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