What is the difference between Go's if-else and switch statements?

In Go, both the if-else and switch statements are used for conditional branching in a program, but they differ in their syntax and usage.

The **if-else** statement is used to execute a block of code if a given condition is true, and execute another block of code if the condition is false. The syntax of an **if-else** statement is as follows:

if condition {
    // code to execute if condition is true
} else {
    // code to execute if condition is false
}

Here, **condition** is any expression that can be evaluated to a boolean value (**true** or **false**). If **condition** is true, the code block inside the **if** statement is executed, otherwise the code block inside the **else** statement is executed.

The **switch** statement, on the other hand, is used to evaluate a given expression against multiple possible values, and execute different blocks of code depending on which value matches. The syntax of a **switch** statement is as follows:

switch expression {
case value1:
    // code to execute if expression == value1
case value2:
    // code to execute if expression == value2
default:
    // code to execute if expression does not match any case
}

Here, **expression** is any expression that can be evaluated to a value that can be compared to the **value1**, **value2**, etc. Each **case** represents a possible value that **expression** can take, and the code block inside the **case** is executed if **expression** matches the corresponding value. The **default** case is executed if **expression** does not match any of the **case** values.

In contrast to **if-else**, which allows for any boolean expression as a condition, **switch** statements can only be used with expressions that evaluate to values of a fixed set of types: integers, floating-point numbers, strings, characters, and booleans. Additionally, **switch** statements are often more concise and readable than long chains of **if-else** statements, especially when there are many possible values to check against.

In summary, **if-else** statements are used for simple conditional branching based on a boolean expression, while **switch** statements are used for more complex branching based on a given expression that can take on multiple values.