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 strstr()                Find Substring

 #include   <string.h>                   Required for declarations only

 char       *strstr(string1,string2);
 const char *string1;                    String to search
 const char *string2;                    Substring to search for


    strstr() returns a pointer to the first occurrence of 'string2' in
    'string1'.

       Returns:     A pointer to the first occurrence of 'string2' in
                    'string1'. NULL is returned if 'string2' is not
                    found.

   -------------------------------- Example ---------------------------------

    The following statements search for 'str2' in 'str1'.

           #include <string.h>
           #include <stdio.h>

           char *str1 = "An ounce of prevention";
           char *str2 = "ounce";
           char *substr;

           main()
           {
               substr = strstr(str1,str2);
               if (substr != NULL)
                   printf("%s",substr);
           }