Zilog Z80380 Uživatelský manuál stáhnout pdf (Strana 84)

Library Functions Run Time Environment

4–20 UM004001-COR1103

strrchr FUNCTION

Header file statement: #include <string.h>

Syntax: char *strrchr (const char *string, int c);

The strrchr function finds the last occurrence of c (converted to char) in string. The string’s

terminating null character (‘\0’) is included in the search. (Use strchr to find the first occur

rence of c in string.)

Return Value

This function returns a pointer to the last occurrence of the character in the string. A NULL

pointer is returned if the given character is not found.

strspn FUNCTION

Header file statement: #include <string.h>

Syntax: size_t strspn( const char *string1, const char *string2 );

The strspn function returns the index of the first character in string1 that does not belong to

the set of characters specified by string2. This value is equivalent to the length of the initial

substring of string1 that consists entirely of characters from string2 . The null character (‘\0’)

terminating string2 is not considered in the matching process. If string1 begins with a charac

ter not in string2, strspn returns 0.

Return Value

This function returns an integer value specifying the length of the segment in string1 consist-

ing entirely of characters in string2.

Parameter Description

string

Searched string

Character to be located

Parameter Description

string1

Searched string

string2

Character set

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Zilog Z80380 Uživatelský manuál Strana 84