Find the last occurrence of a character in a string
#include <string.h> char *strrchr( const char* s, int c );
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The strrchr() function locates the last occurrence of c (converted to a char) in the string pointed to by s. The terminating null character is considered to be part of the string.
A pointer to the located character, or NULL if the character doesn't occur in the string.
#include <stdio.h> #include <stdlib.h> #include <string.h> int main( void ) { printf( "%s\n", strrchr( "abcdeabcde", 'a' ) ); if( strrchr( "abcdeabcde", 'x' ) == NULL ) printf( "NULL\n" ); return EXIT_SUCCESS; }
produces the output:
abcde NULL
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | Yes |
Signal handler | Yes |
Thread | Yes |