strstr()

Find one string inside another

Synopsis:

#include <string.h>

char* strstr(char* str,
             char* substr );

Arguments:

str
The string that you want to search.
substr
The string that 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 strstr() function locates the first occurrence in the string pointed to by str of the sequence of characters (excluding the terminating null character) in the string pointed to by substr.

Returns:

A pointer to the located string, or NULL if the string isn't found.

Examples:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main( void )
  {
    printf( "%s\n", strstr("This is an example", "is") );
    return EXIT_SUCCESS;
  }

produces the output:

is is an example

Classification:

ANSI, POSIX 1003.1

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

Last modified: 2013-12-23

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