The **`toUpperCase()`** function converts a string to uppercase.


#     
## Syntax

```
String.toUpperCase()
```

## Parameters
The `toUpperCase()` function does not take any parameters.

## Return value
The `toUpperCase()` function returns the string that is converted to uppercase.

## Example

Let's look at an example. In this example, we create two strings, `str1` and `str2`. Then, we use the `toUpperCase()` function in *line 5* and *line 11* to capitalize all the characters in our strings.

fun main(args: Array<String>) {
    // Example 1
    val str1 = "Educative"
    print("After applying toUpperCase the result is : ")
    print(str1.toUpperCase())
    print("\n")

    // Example 2
    val str2 = "Edpresso"
    print("After applying toUpperCase the result is : ")
    print(str2.toUpperCase())
    print("\n")
}

What is toUpperCase() in Kotlin?

The toUpperCase() function in Kotlin converts a string to uppercase without any parameters.