> ## Documentation Index
> Fetch the complete documentation index at: https://mintlify.com/NormandoRamirezDelgado/6C-Febrero-2026/llms.txt
> Use this file to discover all available pages before exploring further.

# If Statements

> Learn how to use if statements for conditional logic in Dart

## Overview

If statements allow you to execute code conditionally based on boolean expressions. Dart supports simple if statements, if-else statements, and nested conditionals.

## Basic Syntax

The basic structure of an if statement in Dart:

```dart theme={null}
if (condition) {
  // Code executes if condition is TRUE
} else {
  // Code executes if condition is FALSE
}
```

## If-Else Statement

An if-else statement provides two execution paths based on a condition:

```dart theme={null}
int calificacion = 81;

if (calificacion >= 60) {
  print('\nAcredito\n');
} else {
  print('\nNo acredito\n');
}
// Output: Acredito
```

<Note>
  The condition must evaluate to a boolean value (`true` or `false`). Dart does not allow non-boolean values in conditional expressions.
</Note>

## Simple If Statement

You can use an if statement without an else clause when you only need to execute code when a condition is true:

```dart theme={null}
int calificacion = 81;

if (calificacion >= 60 && calificacion <= 80) {
  print('\nAlumno regular\n');
}
```

<Tip>
  Use logical operators like `&&` (AND) and `||` (OR) to combine multiple conditions in a single if statement.
</Tip>

## Nested If Statements

You can nest if statements to handle multiple conditions:

```dart theme={null}
int calificacion = 81;

if (calificacion >= 90) {
  print('Excelente');
} else if (calificacion >= 80) {
  print('Muy bien');
} else if (calificacion >= 70) {
  print('Bien');
} else {
  print('Necesita mejorar');
}
// Output: Muy bien
```

## Complete Example

Here's a complete example demonstrating different types of if statements:

```dart theme={null}
void main() {
  int calificacion = 81;

  // Type conversion demonstration
  String asd = calificacion.toString();
  int valor = int.parse(asd);
  print(valor);

  // If-else statement
  if (calificacion >= 60) {
    print('\nAcredito\n');
  } else {
    print('\nNo acredito\n');
  }

  // Simple if with compound condition
  if (calificacion >= 60 && calificacion <= 80) {
    print('\nAlumno regular\n');
  }

  // Nested if-else statements
  if (calificacion >= 90) {
    print('Excelente');
  } else if (calificacion >= 80) {
    print('Muy bien');
  } else if (calificacion >= 70) {
    print('Bien');
  } else {
    print('Necesita mejorar');
  }
}
```

## Best Practices

<Steps>
  <Step title="Use else-if for readability">
    Instead of deeply nested if statements, use `else if` chains for better code readability.
  </Step>

  <Step title="Keep conditions simple">
    Break complex conditions into separate boolean variables with descriptive names.
  </Step>

  <Step title="Consider switch statements">
    For multiple discrete values, consider using switch statements instead of long if-else chains.
  </Step>
</Steps>

## Common Operators

| Operator | Description           | Example           |            |          |   |          |
| -------- | --------------------- | ----------------- | ---------- | -------- | - | -------- |
| `==`     | Equal to              | `x == 5`          |            |          |   |          |
| `!=`     | Not equal to          | `x != 5`          |            |          |   |          |
| `>`      | Greater than          | `x > 5`           |            |          |   |          |
| `<`      | Less than             | `x < 5`           |            |          |   |          |
| `>=`     | Greater than or equal | `x >= 5`          |            |          |   |          |
| `<=`     | Less than or equal    | `x <= 5`          |            |          |   |          |
| `&&`     | Logical AND           | `x > 0 && x < 10` |            |          |   |          |
| \`       |                       | \`                | Logical OR | \`x \< 0 |   | x > 10\` |
| `!`      | Logical NOT           | `!(x == 5)`       |            |          |   |          |