programming-for-dummies

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Real-Life Programming Examples
If you stored the animal class in an “animal.h” file, you’d tell your main
C++ program to use this “animal.h” file by using the include command
like this:
#include “animal.h”
Next, you’d have to define an object name and declare it as an object based
on a class. So if you wanted to create a cow object with the animal class,
you’d use this:
#include “animal.h”
int main()
{
animal cow;
return 0;
}
The #include “animal.h” command tells the program to use the class
stored in the “animal.h” file. Most C++ also use multiple #include commands
to make a program work, so the entire C++ program up to this point
actually looks like this:
#include
#include
#include “animal.h”
int main()
{
animal cow;
return 0;
}
Running subprograms stored in an object
After you define an object in your main program, you can run a subprogram
stored in that object. So if you wanted to run the initial_position subprogram,
stored in the cow object, you’d identify the object name followed
by the object’s subprogram to run, such as
cow.initial_position (1,1);
The cow.initial_position (1,1) command tells the computer to use
the cow object, run the initial_position subprogram stored in that cow
object, and use the values 1 and 1.