strstr() - String Manipulation Function
How to locate substring in C++?
Explanation
strstr() manipulation function is used to locate a substring by returning a pointer to the first occurence of str2 in str1. If no matches are found it returns a null pointer.
char * strstr ( const char * str1, const char * str2 );
Result :
First occurence of 'net' is in the 11th position.
In the above example, strstr() manipulation function is used to locate the substring by finding first occurrence of "net" in "str1".
Syntax:
char * strstr ( const char * str1, const char * str2 );
Example :
| #include <stdio.h> #include <cstring.h> int main () { char str1[] = "indiandir.net is online directory webiste"; char str2[] = "net"; char * pt; pt=strstr(str1,str2); if( pt== NULL ) { printf( "Could not find the substring '%s'\n", str2 ); } else { printf ("First occurence of '%s' is in the %dth position.\n", str2,pt-str1+1); } return 0; } |
Result :
First occurence of 'net' is in the 11th position.
In the above example, strstr() manipulation function is used to locate the substring by finding first occurrence of "net" in "str1".
