strupr()
Convert a string to uppercase
Synopsis:
#include <string.h>
char* strupr( char* s1 );
Arguments:
- s1
- The string that you want to convert to uppercase.
Library:
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
Description:
The strupr() function replaces the string s1 with uppercase characters, by invoking toupper() for each character in the string.
Returns:
The address of the string.
Examples:
#include <stdio.h> #include <stdlib.h> #include <string.h> char source[] = { "A mixed-case STRING" }; int main( void ) { printf( "%s\n", source ); printf( "%s\n", strupr( source ) ); printf( "%s\n", source ); return EXIT_SUCCESS; }
produces the output:
A mixed-case STRING A MIXED-CASE STRING A MIXED-CASE STRING
Classification:
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | Yes |
Signal handler | Yes |
Thread | Yes |