Pointers and References C/C++

In this chapter we are going to study:
- Pointers.
- References.
- How to use them.

Pointers

When we have to create a new variable, we type:
The variable "x" is saved to memory, then memory keep that value in a row.
 If we change the value of the variable "x" like:

int x = x + 100;

Then, the memory row that keeps the last value x = 10, now is changed to x = 110.

How to use

In the following example we can see a few lines of code to study how to use pointers and their operators:
For example, the variable (int *my_pointer) is a variable of pointer type. That kind of variable can keep a memory address that keeps an integer data type.
If we need to know a memory address about another variable or element, we have to use the &(ampersand) operator. In the code we can see how we keep the memory address of variable (int age) to a integer pointer variable (int *my_pointer).

my_pointer = &age;

References

References are exclusive of C++ language.
Example

int main(void)
{
   int code;
   int &code2 = code;
   code2 = 5;
}

In this case, we created a variable called (code) and a reference variable called (code2) that calls (code). Now all operations that we would do with (code2) is performed with the variable (code)
This is a fast and summarized tutorial about pointers and references for C/C++.

Alex - aferrerdeveloper.com