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