- 1). Load the C++ IDE by clicking on its program icon. When it opens, select "File/New/Project" and choose "C++ Project" to create a new C++ project. A blank source code file appears in the text editor portion of the IDE.
- 2). Import the following library by writing the following two statements at the top of the source code file:
#include <iostream>
using namespace std; - 3). Create a basic class that represents an object that stores a pointer to a temperature value. Write the following class declaration and logic near the top of the source code file:
class obj
{ public: int* temp; }; - 4). Create a main function. In this function, you will create a temperature variable and several objects that monitor it. Each object will be made to point to the temperature variable, so if it ever changes, all objects will be affected. Declare the main function by writing the following, and please note that all the following code will need to be written in between the curly braces following the main function:
int main()
{} - 5). Declare a variable that has a temperature value, like this:
int temp = 98; - 6). Create a constant that represents the number of objects you wish to create. For example, to create ten objects, you could write the following:
const int numberOfObjects = 10; - 7). Create an array of objects using the following line of code:
obj objectArray[numberOfObjects]; - 8). Loop through a "for" loop once for every object. With every iteration of the for loop, you will add a new object to the object array and set it to point to the "temp" variable. This code will go in between the curly brackets of the "for" loop. Write the following:
for(int i = 0; i < numberOfObjects; i++)
{} - 9). Create a new object by writing the following in between the curly brackets of the loop:
obj* o = new obj(); - 10
Point the object's internal pointer at the temperature variable with the following line of code:
(*o).temp = &temp; - 11
Add the object to the array:
objectArray[i] = o; - 12
Execute the program. The program creates ten objects that each point to a single "temp" variable. The program has no output.
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