# toupper

Upper case conversion.

## Syntax

* res = toupper(str)

## Input argument

* str - a row character array, a cell of strings or an string array.

## Output argument

* res - a string upper case

## Description

**toupper** converts a string to upper case.

## Examples

```matlab
toupper('NelSon')
```

```matlab
upper(["NelSon", "is", "open"])
```

## See also

[tolower](tolower).

## History

| Version | Description     |
| ------- | --------------- |
| 1.0.0   | initial version |

## Author

Allan CORNET
