CC78K4 Datasheet, PDF (223/523 Pages) NEC – CC78K4 Ver.2.30 or Later, C Compiler Language

CHAPTER 10 LIBRARY FUNCTIONS
6-7 strchr,
strrchr
Character String/Memory Functions
FUNCTION
The string function strchr returns a pointer to the first occurrence of a specified character in a string.
The string function strrchr returns a pointer to the last occurrence of a specified character in a string.
HEADER
string. h
FUNCTION PROTOTYPE
char *strchr (const char *s, int c);
char *strrchr (const char *s, int c);
Function
strchr,
strrchr
Arguments
s... Pointer to string to be
searched
c ... Character specified for
search
Return Value
• Pointer indicating the first or
last occurrence of c in string
s if c is found in s
• Null pointer if c is not found
in s
EXPLANATION
strchr
• The strchr function searches the string pointed to by s for the character specified by c and returns a pointer
to the first occurrence of c (converted to char type) in the string.
• The null terminator is regarded as part of the string.
• If the specified character is not found in the string, the function returns a null pointer.
strrchr
• The strrchr function searches the string pointed to by s for the character specified by c and returns a pointer
to the last occurrence of c (converted to char type) in the string.
• The null terminator is regarded as part of the string.
• If no match is found, the function returns a null pointer.
User’s Manual U15556EJ1V0UM
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