C ctype toupper() Function
Example
Convert a character to uppercase:
char l = 'a';
char u = toupper(l);
printf("%c in uppercase is %c", l, u);
Definition and Usage
The toupper() function returns the ASCII value of an uppercase version of the character. If the
character is not an uppercase character then its value is returned without being changed.
The toupper() function is defined in the <ctype.h> header file.
Syntax
int toupper(int c);Parameter Values
| Parameter | Description |
|---|---|
| c | Required. The ASCII value of a character or an actual character |
Technical Details
| Returns: | An int value representing the ASCII value of the uppercase version of a character. |
|---|
