Pointer Tasks

This part of the assignment will give you a chance to perform some simple tasks with pointers. The instructions below are a sequence of tasks that are only loosely related to each other. Start the assignment by creating a file named pointerTasks.cpp with an empty main function, then add statements in main$()$ to accomplish each of the tasks listed below. Some of the tasks will only require a single C$++$ statement, others will require more than one. For each step, include a comment in your program indicating which step you are completing in the following statement$($s$).$ The easiest way to do this is copy and paste the below into your main function first, and then fill in your statements. Note: for steps $11$ and $21,$ you will need to declare functions. These should be declared before main, not inside of main.

$//1.$ Create two integer variables named $x$ and $y$

$//2.$ Create an int pointer named p$1$

$//3.$ Store the address of $x$ in $p1$

$\frac{\frac{?}{?}}{4}.$ Use $p1$ to set the value of $x$ to $99$

$\frac{\frac{?}{?}}{5}.$ Using cout and $x,$ display the value of $x$

$//6.$ Using cout and the pointer p$1,$ display the value of $x$

$//7.$ Store the address of $y$ into $p1$

$\frac{\frac{?}{?}}{8}.$ Use $p1$ to set the value of $y$ to $-300$

$//9.$ Create two new variables: an int named temp, and an int pointer named p$2//10.$ Use temp, $p1,$ and $p2$ to swap the values in $x$ and $y($this will take a few statements$)$

$//11.$ Write a function with the following signature: void noNegatives $($int ${?}^{**}x).$ The function should accept the address of an int variable. If the value of this integer is negative then it should set it to zero. Note: you should declare th e noNegatives function BEFORE main, not inside of main.

$//12.$ Call the function twice: once with the address of $x$ as the argument, and once with the address of $y$

$//13.$ Use p$2$ to display the values in $x$ and $y($this will require both assignme nt statements and cout statements$)$

$//14.$ Create an int array with two elements. The array should be named $\text{'}a\text{'}$

$//15.$ Use p$2$ to initialize the first element of a with the value of $x$

$//16.$ Use p$2$ to initialize the second element of a with the value of $y$

$//17.$ Using cout, display the address of the first element in a

$//18.$ Using cout, display the address of the second element in a

$//19.$ Use p$1,$ p$2,$ and temp to swap the values in the two elements of array

$\text{'}a\text{'}.($first point $p1$ at $a[0],$ then point $p2$ at $a[1].$ After this the swapping st eps should look very similar to step $10.)$

$//20.$ Display the values of the two elements. $($The first element should be $99,$ the second $0).$

$//21.$ Write a function named 'swap' that accepts two integer pointers as argum ents, and then swaps the two integers that the pointers point to$.$ This functio n must be pass by pointer, i$.$e$.$ int $*,$ not pass by reference, i$.$e$.$ int &$.$ Not $e$ : you should declare the swap function BEFORE main, not inside of main.

$//22.$ Call your swap function with the addresses of $x$ and $y,$ then print their values. $(x$ should be $99,$ y should be $0).$

$//23.$ Call your swap function with the address of the two elements in array $\text{'}a\text{'},$ then print their values. $(a[0]$ should be $0,a[1]$ should be $99)$