index()

Updated: April 19, 2023

Find a character in a string

Synopsis:

#include <strings.h>

char* index( const char* s, 
             int c );

Arguments:

s
The string you want to search. This string must end with a null (\0) character. The null character is considered to be part of the string.
c
The character you're looking for.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The index() function returns a pointer to the first occurrence of the character c in the string s.

Returns:

A pointer to the character, or NULL if the character doesn't occur in the string.

Classification:

Standard Unix; removed from POSIX.1-2008

Safety:  
Cancellation point No
Interrupt handler No
Signal handler Yes
Thread Yes