The "strstr(str1,str2)" function in the C language is used to determine whether the string "str2" is a substring of "str1"; if so, the function returns "str2" in "str1" The address of the first occurrence; otherwise NULL is returned. Its syntax is "* strstr(str1,str2)".
strstr(str1,str2) function is used to determine whether the string str2 is a substring of str1. If so, the function returns the address of the first occurrence of str2 in str1; otherwise, NULL is returned.
C Language
Included file: string.h
Function name: strstr
Function prototype:
extern char *strstr(char *str1, const char *str2);
Syntax:
* strstr(str1,str2)
str1: The target to be searched string expression to search.
str2: The object to be searched The string expression to find.
Return value: If str2 is a substring of str1, return the address of the first occurrence of str2 in str1; if str2 is not a substring of str1, return NULL.
Example:
char str[]="1234xyz"; char *str1=strstr(str,"34"); cout << str1 << endl;
displays: 34xyz
Recommended tutorial: "C Language"
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