插入一个元素或多个元素或一定范围的元素到指定位置的字符串中。
basic_string<CharType, Traits, Allocator>& insert(
size_type _P0,
const value_type* _Ptr
);
basic_string<CharType, Traits, Allocator>& insert(
size_type _P0,
const value_type* _Ptr,
size_type _Count
);
basic_string<CharType, Traits, Allocator>& insert(
size_type _P0,
const basic_string<CharType, Traits, Allocator>& _Str
);
basic_string<CharType, Traits, Allocator>& insert(
size_type _P0,
const basic_string<CharType, Traits, Allocator>& _Str,
size_type _Off,
size_type _Count
);
basic_string<CharType, Traits, Allocator>& insert(
size_type _P0,
size_type _Count,
value_type _Ch
);
iterator insert(
iterator _It
);
iterator insert(
iterator _It,
value_type _Ch
)l
template<class InputIterator>
void insert(
iterator _It,
InputIterator _First,
InputIterator _Last
);
void insert(
iterator _It,
size_type _Count,
value_type _Ch
);
void insert(
iterator _It,
const_pointer _First,
const_pointer _Last
);
void insert(
iterator _It,
const_iterator _First,
const_iterator _Last
);
参数
_P0
位置的索引有关的问题之后插入新字符。_Ptr
C# 字符串的全部或一部分插入字符串。_Count
要插入的字符数。_Str
的字符串插入全部或部分目标字符串。_Off
提供字符的源字符串的索引将被追加。_Ch
将插入的元素的字符值。_It
解决之后插入位置的字符将在迭代器。_First
在解决源区的输入迭代器、const_pointer 或 const_iterator 第一个元素将被插入。_Last
处理位置的集合 const_pointer 输入迭代器、const_iterator 除元素外或最后将插入的源区。
返回值
为给由成员函数分配处理字符位置的新字符，或者在各个字符插入，迭代器插入的字符串对象的引用或是中，根据无特殊成员函数。
示例
// basic_string_insert.cpp
// compile with: /EHsc
#include <string>
#include <iostream>
int main( )
{
using namespace std;
// The first member function inserting a C-string
// at a given position
basic_string <char> str1a ( "way" );
const char *cstr1a = "a";
str1a.insert ( 0, cstr1a );
cout << "The string with a C-string inserted at position 0 is: "
<< str1a << "." << endl;
// The second member function inserting a C-string
// at a given position for a specified number of elements
basic_string <char> str2a ( "Good" );
const char *cstr2a = "Bye Bye Baby";
str2a.insert ( 4, cstr2a ,3 );
cout << "The string with a C-string inserted at the end is: "
<< str2a << "." << endl;
// The third member function inserting a string
// at a given position
basic_string <char> str3a ( "Bye" );
string str3b ( "Good" );
str3a.insert ( 0, str3b );
cout << "The string with a string inserted at position 0 is: "
<< str3a << "." << endl;
// The fourth member function inserting part of
// a string at a given position
basic_string <char> str4a ( "Good " );
string str4b ( "Bye Bye Baby" );
str4a.insert ( 5, str4b , 8 , 4 );
cout << "The string with part of a string inserted at position 4 is: "
<< str4a << "." << endl;
// The fifth member function inserts a number of characters
// at a specified position in the string
string str5 ( "The number is: ." );
str5.insert ( 15 , 3 , '3' );
cout << "The string with characters inserted is: "
<< str5 << endl;
// The sixth member function inserts a character
// at a specified position in the string
string str6 ( "ABCDFG" );
basic_string <char>::iterator str6_Iter = ( str6.begin ( ) + 4 );
str6.insert ( str6_Iter , 'e' );
cout << "The string with a character inserted is: "
<< str6 << endl;
// The seventh member function inserts a range
// at a specified position in the string
string str7a ( "ABCDHIJ" );
string str7b ( "abcdefgh" );
basic_string <char>::iterator str7a_Iter = (str7a.begin ( ) + 4 );
str7a.insert ( str7a_Iter , str7b.begin ( ) + 4 , str7b.end ( ) -1 );
cout << "The string with a character inserted from a range is: "
<< str7a << endl;
// The eigth member function inserts a number of
// characters at a specified position in the string
string str8 ( "ABCDHIJ" );
basic_string <char>::iterator str8_Iter = ( str8.begin ( ) + 4 );
str8.insert ( str8_Iter , 3 , 'e' );
cout << "The string with a character inserted from a range is: "
<< str8 << endl;
}
要求
标头：< 字符串>
命名空间: std