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strchr(3) Library Functions Manual strchr(3) NAME index, rindex, strchr, strrchr - Search for character in string LIBRARY Standard C Library (libc.so, libc.a) SYNOPSIS #include <strings.h> char *index( const char *s, int c); char *rindex( const char *s, int c); #include <string.h> char *strchr( const char *s, int c); char *strrchr( const char *s, int c); STANDARDS Interfaces documented on this reference page conform to industry stan- dards as follows: index(), rindex(): XPG4-UNIX strchr(), strrchr(): XPG4, XPG4-UNIX Refer to the standards(5) reference page for more information about in- dustry standards and associated tags. PARAMETERS Specifies the string to search. Specifies a character, expressed as an int data type, to search for. DESCRIPTION The index() function locates the first occurrence of the integer speci- fied by the c parameter, which is converted to an unsigned char, in the string pointed to by the s parameter. The terminating null byte is treated as part of the string pointed to by the s parameter. The rindex() function locates the last occurrence of the integer speci- fied by the c parameter, which is converted to a char value, in the string pointed to by the s parameter. The terminating null byte is treated as a part of the string pointed to by the s parameter. The strchr() and strrchr() functions provide the same functionality as the index() and rindex() functions, respectively. If c is a null byte ('\0') in any of these functions, the function lo- cates the terminating null byte of s. RETURN VALUES Upon successful completion, these functions return a pointer to the byte in the scanned string. When the byte specified by parameter c is not found, a null pointer is returned. RELATED INFORMATION Functions: string(3), wcschr(3) Standards: standards(5) delim off strchr(3)