The **`toupper()` function** in R  converts a string to uppercase. 

The following figure shows a visual representation of the `toupper()` function.

#   
#  Syntax
```r
toupper(string)
```
#  
#  Parameter
As a parameter, the `toupper()` function requires a string that is to be converted to uppercase.

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

##  
## Code

The code below shows how the `toupper()` function works.





#String
a <- toupper("educative");
print(paste0("toupper('educative'): ", a))

#String with number
b <- toupper("educative09");
print(paste0("toupper('educative09'): ", b))


How to convert a string to uppercase in R

toupper() in R converts strings to uppercase by using toupper(string). It returns the uppercase version of input strings.