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basic_string::replace

在指定位置取代字串中的項目會與其他範圍或字元複製到指定的字元或字串或 C 字串。

basic_string<CharType, Traits, Allocator>& replace(
   size_type _Pos1, 
   size_type _Num1,
   const value_type* _Ptr
);
basic_string<CharType, Traits, Allocator>& replace(
   size_type _Pos1, 
   size_type _Num1,
   const basic_string<CharType, Traits, Allocator>& _Str
);
basic_string<CharType, Traits, Allocator>& replace(
   size_type _Pos1, 
   size_type _Num1,
   const value_type* _Ptr, 
   size_type _Num2
);
basic_string<CharType, Traits, Allocator>& replace(
   size_type _Pos1, 
   size_type _Num1,
   const basic_string<CharType, Traits, Allocator>& _Str, 
   size_type _Pos2, 
   size_type _Num2
);
basic_string<CharType, Traits, Allocator>& replace(
   size_type _Pos1, 
   size_type _Num1,
   size_type _Count, 
   value_type _Ch
);
basic_string<CharType, Traits, Allocator>& replace(
   iterator _First0, 
   iterator _Last0,
   const value_type* _Ptr
);
basic_string<CharType, Traits, Allocator>& replace(
   iterator _First0, 
   iterator _Last0,
   const basic_string<CharType, Traits, Allocator>& _Str
);
basic_string<CharType, Traits, Allocator>& replace(
   iterator _First0,
   iterator _Last0,
   const value_type* _Ptr, 
   size_type _Num2
);
basic_string<CharType, Traits, Allocator>& replace(
   iterator _First0, 
   iterator _Last0,
   size_type _Num2, 
   value_type _Ch
);
template<class InputIterator>
   basic_string<CharType, Traits, Allocator>& replace(
      iterator _First0, 
      iterator _Last0,
      InputIterator _First, 
      InputIterator _Last
   );
basic_string<CharType, Traits, Allocator>& replace(
    iterator _First0,
    iterator _Last0,
    const_pointer _First,
    const_pointer _Last
);
basic_string<CharType, Traits, Allocator>& replace(
    iterator _First0,
    iterator _Last0,
    const_iterator _First,
    const_iterator _Last
);

參數

  • _Str
    是字元的來源運算元的新字串。

  • _Pos1
    取代啟動運算元字串的索引。

  • _Num1
    在運算元字串要取代的字元數上限。

  • _Pos2
    開始複製作業的參數字串的索引。

  • _Num2
    從參數 C 字串將使用的最大數目。

  • _Ptr
    是字元的來源字串運算元的 C 字串。

  • _Ch
    要複製的字元輸入字串運算元。

  • _First0
    解決的 Iterator 在運算元的字串中移除之第一個字元。

  • _Last0
    解決的 Iterator 在運算元的字串中移除之最後一個字元。

  • _First
    解決 Iterator const_pointer、或的 const_iterator 在參數字串複製的第一個字元。

  • _Last
    解決 Iterator const_pointer、或的 const_iterator 在參數字串複製的最後一個字元。

  • _Count
    次數 _Ch 複製到字串運算元。

傳回值

所做的取代作業的字串。

範例

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

int main( ) 
{
   using namespace std;

   // The first two member functions replace
   // part of the operand string with
   // characters from a parameter string or C-string
   string result1a, result1b;
   string s1o ( "AAAAAAAA" );
   string s1p ( "BBB" );
   const char* cs1p = "CCC";
   cout << "The operand string s1o is: " << s1o << endl;
   cout << "The parameter string s1p is: " << s1p << endl;
   cout << "The parameter C-string cs1p is: " << cs1p << endl;
   result1a = s1o.replace ( 1 , 3 , s1p );
   cout << "The result of s1o.replace ( 1 , 3 , s1p )\n is " 
        << "the string: " << result1a << "." << endl;
   result1b = s1o.replace ( 5 , 3 , cs1p );
   cout << "The result of s1o.replace ( 5 , 3 , cs1p )\n is " 
        << "the string: " << result1b << "." << endl;
   cout << endl;

   // The third & fourth member function replace
   // part of the operand string with characters
   // form part of a parameter string or C-string
   string result2a, result2b;
   string s2o ( "AAAAAAAA" );
   string s2p ( "BBB" );
   const char* cs2p = "CCC";
   cout << "The operand string s2o is: " << s2o << endl;
   cout << "The parameter string s1p is: " << s2p << endl;
   cout << "The parameter C-string cs2p is: " << cs2p << endl;
   result2a = s2o.replace ( 1 , 3 , s2p , 1 , 2 );
   cout << "The result of s2o.replace (1, 3, s2p, 1, 2)\n is " 
        << "the string: " << result2a << "." << endl;
   result2b = s2o.replace ( 4 , 3 , cs2p , 1 );
   cout << "The result of s2o.replace (4 ,3 ,cs2p)\n is " 
        << "the string: " << result2b << "." << endl;
   cout << endl;

   // The fifth member function replaces
   // part of the operand string with characters
   string result3a;
   string s3o ( "AAAAAAAA" );
   char ch3p = 'C';
   cout << "The operand string s3o is: " << s3o << endl;
   cout << "The parameter character c1p is: " << ch3p << endl;
   result3a = s3o.replace ( 1 , 3 , 4 , ch3p );
   cout << "The result of s3o.replace(1, 3, 4, ch3p)\n is " 
        << "the string: " << result3a << "." << endl;
   cout << endl;

   // The sixth & seventh member functions replace
   // part of the operand string, delineated with iterators,
   // with a parameter string or C-string
   string s4o ( "AAAAAAAA" );
   string s4p ( "BBB" );
   const char* cs4p = "CCC";
   cout << "The operand string s4o is: " << s4o << endl;
   cout << "The parameter string s4p is: " << s4p << endl;
   cout << "The parameter C-string cs4p is: " << cs4p << endl;
   basic_string<char>::iterator IterF0, IterL0;
   IterF0 = s4o.begin ( );
   IterL0 = s4o.begin ( ) + 3;
   string result4a, result4b;
   result4a = s4o.replace ( IterF0 , IterL0 , s4p );
   cout << "The result of s1o.replace (IterF0, IterL0, s4p)\n is " 
        << "the string: " << result4a << "." << endl;
   result4b = s4o.replace ( IterF0 , IterL0 , cs4p );
   cout << "The result of s4o.replace (IterF0, IterL0, cs4p)\n is " 
        << "the string: " << result4b << "." << endl;
   cout << endl;

   // The 8th member function replaces
   // part of the operand string delineated with iterators
   // with a number of characters from a parameter C-string
   string s5o ( "AAAAAAAF" );
   const char* cs5p = "CCCBB";
   cout << "The operand string s5o is: " << s5o << endl;
   cout << "The parameter C-string cs5p is: " << cs5p << endl;
   basic_string<char>::iterator IterF1, IterL1;
   IterF1 = s5o.begin ( );
   IterL1 = s5o.begin ( ) + 4;
   string result5a;
   result5a = s5o.replace ( IterF1 , IterL1 , cs5p , 4 );
   cout << "The result of s5o.replace (IterF1, IterL1, cs4p ,4)\n is " 
        << "the string: " << result5a << "." << endl;
   cout << endl;

   // The 9th member function replaces
   // part of the operand string delineated with iterators
   // with specified characters
   string s6o ( "AAAAAAAG" );
   char ch6p = 'q';
   cout << "The operand string s6o is: " << s6o << endl;
   cout << "The parameter character ch6p is: " << ch6p << endl;
   basic_string<char>::iterator IterF2, IterL2;
   IterF2 = s6o.begin ( );
   IterL2 = s6o.begin ( ) + 3;
   string result6a;
   result6a = s6o.replace ( IterF2 , IterL2 , 4 , ch6p );
   cout << "The result of s6o.replace (IterF1, IterL1, 4, ch6p)\n is " 
        << "the string: " << result6a << "." << endl;
   cout << endl;

   // The 10th member function replaces
   // part of the operand string delineated with iterators
   // with part of a parameter string delineated with iterators
   string s7o ( "OOOOOOO" );
   string s7p ( "PPPP" );
   cout << "The operand string s7o is: " << s7o << endl;
   cout << "The parameter string s7p is: " << s7p << endl;
   basic_string<char>::iterator IterF3, IterL3, IterF4, IterL4;
   IterF3 = s7o.begin ( ) + 1;
   IterL3 = s7o.begin ( ) + 3;
   IterF4 = s7p.begin ( );
   IterL4 = s7p.begin ( ) + 2;
   string result7a;
   result7a = s7o.replace ( IterF3 , IterL3 , IterF4 , IterL4 );
   cout << "The result of s7o.replace (IterF3 ,IterL3 ,IterF4 ,IterL4)\n is " 
        << "the string: " << result7a << "." << endl;
   cout << endl;
}
  
  
  
  
  
  
  
  
  
  

需求

標題: <string>

命名空間: std

請參閱

參考

basic_string Class