strrchr, _mbsrchr, wcsrchr

Remonter à String.h - Index

Header File

string.h, mbstring.h

Category

Memory and String Manipulation Routines, Inline Routines, C++ Prototyped Routines

Prototype

char *strrchr(const char *s, int c); /* C only */

const char *strrchr(const char *s, int c); // C++ only

char *strrchr(char *s, int c); // C++ only

wchar_t *wcsrchr(const wchar_t *s, wchar_t c);

unsigned char * _mbsrchr(const unsigned char *s, unsigned int c);

Description

Scans a string for the last occurrence of a given character.

strrchr scans a string in the reverse direction, looking for a specific character. strrchr finds the last occurrence of the character c in the string s. The null-terminator is considered to be part of the string.

Return Value

strrchr returns a pointer to the last occurrence of the character c. If c does not occur in s, strrchr returns null.

Example

 #include <string.h>
 #include <stdio.h>
 int main(void)
 {
    char string[15];
    char *ptr, c = 'r';
    strcpy(string, "This is a string");
    ptr = strrchr(string, c);
    if (ptr)
       printf("The character %c is at position: %d\n", c, ptr-string);
    else
       printf("The character was not found\n");
    return 0;
 }

Portability

	POSIX	Win32	ANSI C	ANSI C++
strrchr	+	+	+	+
_mbsrchr		+
wcsrchr		+	+	+