basic_string::_Copy_s
複製最多字元的指定數目從某個索引位置的在 [目標字元陣列的來源字串。
size_type _Copy_s(
value_type *_Dest,
size_type _Dest_size,
size_type _Count,
size_type _Off = 0
) const;
參數
_Dest
項目將複製到其中的目標字元陣列。_Dest_size
_Dest的大小。_Count
從來源字串會複製,一般而言,字元數。_Off
在複製要做的來源字串的開頭位置。
傳回值
實際複製的字元數目。
備註
null 字元未附加至該複本的結尾。
範例
// basic_string__Copy_s.cpp
// compile with: /EHsc
#include <string>
#include <iostream>
int main( )
{
using namespace std;
string str1("Hello World");
basic_string<char>::iterator str_Iter;
const int array1_size = 20;
char array1[array1_size] = { 0 };
const int array2_size = 10;
char array2[array2_size] = { 0 };
basic_string<char>:: pointer array1Ptr = array1;
basic_string<char>:: value_type *array2Ptr = array2;
cout << "The original string str1 is: ";
for (str_Iter = str1.begin(); str_Iter != str1.end(); str_Iter++)
cout << *str_Iter;
cout << endl;
basic_string<char>::size_type nArray1;
nArray1 = str1._Copy_s(array1Ptr, array1_size, 12);
cout << "The number of copied characters in array1 is: "
<< nArray1 << endl;
cout << "The copied characters array1 is: " << array1 << endl;
basic_string<char>:: size_type nArray2;
nArray2 = str1._Copy_s(array2Ptr, array2_size, 5, 6);
cout << "The number of copied characters in array2 is: "
<< nArray2 << endl;
cout << "The copied characters array2 is: " << array2Ptr << endl;
}
需求
標題: <string>
命名空間: std