Replace in C ++ string

Replace the element or substring in the original string. Returns the string after replacement.

(1) Use string or C-string to replace the _ num1 character starting from _ pos1 in the operation string.

Basic _ string & replace (size _ type _ pos1, size _ type _ num1, const value _ type * _ PTR );

Basic _ string & replace (size _ type _ pos1, size _ type _ num1, const Basic _ string _ Str );

String A, B;

String S ("aaaaaaaa ");

String s1p ("BBB ");

Const char * cs1p = "CCC ";

A = S. Replace (1, 3, s1p); // s = "abbbaaaa"

B = S. Replace (5, 3, cs1p );//

 

(2) Use the _ num2 characters starting from _ pos2 in string to replace _ num1 characters starting from _ pos1 in string.

Use _ num2 characters in C-string to replace _ num1 characters starting from _ pos1 in string.

Basic _ string & replace (size _ type _ pos1, size _ type _ num1, const Basic _ string & _ STR,

Size _ type _ pos2, size _ type );

Basic _ string & replace (size _ type _ pos1, size _ type _ num1,

Const value _ type * _ PTR, size _ type _ num2 );

String A, B;

String S ("aaaaaaaa ");

String S2P ("BBB ");

Const char * cs2p = "CCC ";

A = S. Replace (1, 3, S2P, 1, 2); // s = "abbaaaa"

B = S. Replace (4, 3, cs2p, 1 );//

 

(3) Use _ count character _ CH to replace _ num1 characters starting from _ pos1 in the operation string.

Basic _ string & replace (size _ type _ pos1, size _ type _ num1,

Size _ type _ count, value _ type _ CH );

 

String result;

String S ("aaaaaaaa ");

Char CH = 'C ';

Result = S. Replace (1, 3, 4, ch); // s = "accccaaaa"

 

(4) use string or C-string to replace the characters from first0 to last0 in the string operation.

Basic _ string & replace (iterator first0, iterator last0, const Basic _ string & _ Str );

Basic _ string & replace (iterator first0, iterator _ last0, const value _ type * _ PTR );

String S ("aaaaaaaa"); string s4p ("BBB ");

Const char * cs4p = "CCC ";

Basic_string <char >:: iterator iterf0, iterl0;

Iterf0 = S. Begin (); iterl0 = S. Begin () + 3;

String A, B;

A = S. Replace (iterf0, iterl0, s4p); // s = "bbbaaaaa"

B = S. Replace (iterf0, iterl0, cs4p );//

 

(5) use the _ num2 characters starting from _ pos2 in string to replace the characters from first0 to last0 in string.

Use the _ num2 characters in the C-string to replace the characters from first0 to last0 in the operation string.

Basic _ string & replace (iterator _ first0, iterator _ last0,

Const value _ type * _ PTR, size _ type _ num2 );

Template <class inputiterator> Basic _ string & replace (

Iterator _ first0, iterator _ last0,

Inputiterator _ first, inputiterator _ last );

Iterf3 = S. Begin () + 1; iterl3 = S. Begin () + 3;

Iterf4 = S. Begin (); iterl4 = S. Begin () + 2;

A = S. Replace (iterf3, iterl3, iterf4, iterl4 );

B = S. Replace (iterf1, iterl1, cs5 P, 4 );

(6) Use _ count character _ CH to replace the characters from first0 to last0 in the operation string.

Basic _ string & replace (iterator _ first0, iterator _ last0,

Size _ type _ count, value _ type _ CH );

A = S. Replace (iterf2, iterl2, 4, ch );

 

Frequently Used functions:

// Test1.cpp: defines the entry point of the console application. <Br/> // </P> <p> # include "stdafx. H "<br/> # include <iostream> <br/> # include <string> <br/> using namespace STD; </P> <p> string & replace_all (string & STR, const string & old_value, const string & new_value) <br/>{< br/> while (true) {<br/> string: size_type pos (0); <br/> If (Pos = Str. find (old_value ))! = String: NPOs) <br/> Str. replace (Pos, old_value.length (), new_value); <br/> else break; <br/>}< br/> return STR; <br/>}</P> <p> string & replace_all_distinct (string & STR, const string & old_value, const string & new_value) <br/>{< br/> for (string: size_type pos (0); pos! = String: NPOs; POS + = new_value.length () {<br/> If (Pos = Str. Find (old_value, POS ))! = String: NPOs) <br/> Str. replace (Pos, old_value.length (), new_value); <br/> else break; <br/>}< br/> return STR; <br/>}</P> <p> int main () <br/> {<br/> // cout <STR; <br/> string STR = "lihan"; <br/> Str. replace (Str. begin (), str. end ()-12212,'s '); <br/> cout <STR; <br/> cout <replace_all (string (""), "2 ", "3") <Endl; <br/> cout <replace_all_distinct (string ("12212"), "12", "21") <Endl; <br/>}</P> <p>