@node strupr, string
@subheading Syntax

@example
#include <string.h>

char *strupr(char *string);
@end example

@subheading Description

This function converts all lower case characters in @var{string} to
upper case. 

@subheading Return Value

@var{string}

@subheading Portability

@portability !ansi, !posix

@subheading Example

@example
char buf[] = "Foo!";
strupr(buf);
@end example