char_traits::find

Searches for the first occurrence of a specified character in a range of characters.

static const char_type* find( 
   const char_type* _Str,  
   size_t _Num,  
   const char_type& _Ch  
);

Parameters

• _Str
  The first character in the string to be searched.

• _Num
  The number of positions, counting from the first, in the range to be searched.

• _Ch
  The character to be searched for in the range.

Return Value

A pointer to the first occurrence of the specified character in the range if a match is found; otherwise, a null pointer.

Example

// char_traits_find.cpp
// compile with: /EHsc
#include <string>
#include <iostream>

int main( ) 
{
   using namespace std;

   const char* s1 = "f2d-1234-abcd";
   const char* result1;
   cout << "The string to be searched is: " << s1 << endl;

   // Searching for a 'd' in the first 6 positions of string s1
   result1 = char_traits<char>::find ( s1 , 6 , 'd');
   cout << "The character searched for in s1 is: "
        << *result1 << endl;
   cout << "The string beginning with the first occurrence\n "
        << "of the character 'd' is: " << result1 << endl;

   // When no match is found the NULL value is returned
   const char* result2;
   result2 = char_traits<char>::find ( s1 , 3 , 'a');
   if ( result2 == NULL )
      cout << "The result2 of the search is NULL." << endl;
   else
      cout << "The result2 of the search  is: " << result1
           << endl;
}

The string to be searched is: f2d-1234-abcd
The character searched for in s1 is: d
The string beginning with the first occurrence
 of the character 'd' is: d-1234-abcd
The result2 of the search is NULL.

Requirements

Header: <string>

Namespace: std

See Also

Reference

char_traits Struct