Update.

TUTORIAL.md

@@ -9,6 +9,11 @@ Complete guide to the RC (Retoor's C) programming language - a C-like interprete
 3. [Variables and Declarations](#variables-and-declarations)
 4. [Arrays](#arrays)
 5. [Operators](#operators)
+    - [Arithmetic Operators](#arithmetic-operators)
+    - [Comparison Operators](#comparison-operators)
+    - [Logical Operators](#logical-operators)
+    - [Unary Operators](#unary-operators)
+    - [Increment and Decrement Operators](#increment-and-decrement-operators)
 6. [Control Flow](#control-flow)
 7. [Functions](#functions)
 8. [Pointers](#pointers)
@@ -182,6 +187,54 @@ int main() {
 }
 ```
 
+### Increment and Decrement Operators
+
+RC supports both pre-increment/decrement (`++x`, `--x`) and post-increment/decrement (`x++`, `x--`) operators.
+
+#### Post-increment (`x++`)
+The value of the expression is the value of `x` *before* the increment.
+```c
+int main() {
+    int x = 5;
+    int y = x++; // y is 5, x becomes 6
+    printf("x = %d, y = %d\n", x, y);
+    return 0;
+}
+```
+
+#### Pre-increment (`++x`)
+The value of the expression is the value of `x` *after* the increment.
+```c
+int main() {
+    int x = 5;
+    int y = ++x; // y is 6, x becomes 6
+    printf("x = %d, y = %d\n", x, y);
+    return 0;
+}
+```
+
+#### Post-decrement (`x--`)
+The value of the expression is the value of `x` *before* the decrement.
+```c
+int main() {
+    int x = 5;
+    int y = x--; // y is 5, x becomes 4
+    printf("x = %d, y = %d\n", x, y);
+    return 0;
+}
+```
+
+#### Pre-decrement (`--x`)
+The value of the expression is the value of `x` *after* the decrement.
+```c
+int main() {
+    int x = 5;
+    int y = --x; // y is 4, x becomes 4
+    printf("x = %d, y = %d\n", x, y);
+    return 0;
+}
+```
+
 ## Control Flow
 
 ### If-Else Statements