**Sum operator (+)**

The addition operator `+` sums the values on both sides of the `+` sign.

For example:
```
int result = 50 + 2;
```

Instead of any values, you can use variables:


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>Note
>
>In some programming languages, it is possible to sum strings, for example, "Hell" + "o" = "Hello", but not in C.



**Difference operator (-)**

The `-` difference operator forms the difference between the values on both sides of the `-` sign. 

For example:


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You can use the `-` sign to change positive values to negative values.

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**Increment operator (++)**

The increment operator was created to make the code easier to read. 
```
int value = 100;
int result = value++; // int result = value + 1
```
This operator means `+1` and is typically used in loops. This is the simplest form of using this operator.


**Decrement operator (--)**

The decrement operator, on the other hand, means `-1`:
```
int value = 100;
int resul = value--; // int result = value - 1
```


### Post and Prefix Increment

Increment and decrement have two forms:
- **pre**fix (++a);
- **post**fix (a++).

They differ in that they return different values.

| **Operator** | **Expression  example**  | **Description**  | 
| :---  |    :---:     | ---:|
| `++` | `a++` | increments `a` by 1 and return the old value |
| `++` | `++a` | increments `a` by 1 and return the new value |
| `--`   | `--b`| decrements `b` by 1 and return the new value |
| `--`   | `b--` | decrements `b` by 1 and returns the old value |


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In this section, the basics of the C-program running will be learned.

This section will teach us how to store data in a computer and create our own data.

This section introduces the fundamental operators that allow us to compare data, assign data, and perform arithmetic operations.

In this section, we will learn about operators that will help us make complex conditions for our programs, which means the actual control of the program.

In this section, you will learn the concept of functions: what they are, what they are used for, and how to create and call them.

In this section, we'll look at pointers, why and when they are used, and briefly touch on the topic of dynamic memory allocation.

Operator	Expression example	Description
`++`	`a++`	increments `a` by 1 and return the old value
`++`	`++a`	increments `a` by 1 and return the new value
`--`	`--b`	decrements `b` by 1 and return the new value
`--`	`b--`	decrements `b` by 1 and returns the old value

C Basics

Sum, Difference, Increment, Decrement

Post and Prefix Increment

If `b` equals 7, what `b++` equals to?