Open System Services Library Calls Reference Manual (G06.29+, H06.08+, J06.03+)

OSS Library Calls (s) strstr(3)
NAME
strstr - Finds a substring
LIBRARY
G-series native Guardian processes: $SYSTEM.SYSnn.ZCRESRL
G-series native OSS processes: /G/system/sysnn/zcresrl
H-series and J-series native Guardian processes: $SYSTEM.ZDLLnnn.ZCREDLL
32-bit H-series and J-series OSS processes: /G/system/zdllnnn/zcredll
64-bit H-series and J-series OSS processes: /G/system/zdllnnn/ycredll
SYNOPSIS
#include <string.h>
char *strstr(
const char *s1,
const char *s2);
PARAMETERS
s1 Specifies the character string being searched.
s2 Specifies the substring to be located.
DESCRIPTION
The strstr( ) function locates the first occurrence in the string pointed to by the s1 parameter of
the sequence of bytes in the string pointed to by the s2 parameter, excluding the terminating null
character.
RETURN VALUES
Upon successful completion, the strstr( ) function returns a pointer to the located string or a null
pointer when the string is not found. When the s2 parameter points to a string having 0 (zero)
length, the strstr( ) function returns the string pointed to by parameter s1. Upon error, a null
pointer is returned, and errno is set to indicate the error.
RELATED INFORMATION
Functions: strcat(3).
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