C++/String/string insert
Содержание
Insert into str by using the iterator version of insert()
#include <iostream>
#include <string>
#include <cctype>
#include <algorithm>
#include <vector>
using namespace std;
int main()
{
string strA("This is a test.");
string::iterator itr;
// Insert into str by using the iterator version of insert().
cout <<"Insert into a string via an iterator.\n";
string strB(" bigger");
strA.insert(itr, strB.begin(), strB.end());
cout << strA << "\n\n";
return 0;
}
Insert one string at location 10 of another string
#include <iostream>
using std::cout;
using std::endl;
#include <string>
using std::string;
int main()
{
string string1( "AAAAAAA end" );
string string2( "CCCCCCC " );
string string3( "12345678" );
string string4( "xx" );
cout << "Initial strings:\nstring1: " << string1
<< "\nstring2: " << string2 << "\nstring3: " << string3
<< "\nstring4: " << string4 << "\n\n";
// insert string2 at location 10 in string1
string1.insert( 10, string2 );
cout << "Strings after insert:\nstring1: " << string1
<< "\nstring2: " << string2 << "\nstring3: " << string3
<< "\nstring4: " << string4 << endl;
return 0;
}
/*
Initial strings:
string1: AAAAAAA end
string2: CCCCCCC
string3: 12345678
string4: xx
Strings after insert:
string1: AAAAAAA enCCCCCCC d
string2: CCCCCCC
string3: 12345678
string4: xx
*/
Insert one string into another
#include <iostream>
#include <string>
using namespace std;
int main()
{
string str1("this is a test");
string str2("this is another test");
string str3("this is the third test");
string str4;
cout << " str1: " << str1 << endl;
cout << " str2: " << str2 << endl;
cout << " str3: " << str3 << "\n\n";
// Insert one string into another.
str4.insert(5, str2);
cout << "str4 after inserting str2: " << str4 << "\n\n";
return 0;
}
string.insert()
#include <iostream>
#include <string>
using namespace std;
int main()
{
string str1("String handling C++ style.");
string str2("STL Power");
cout << "Initial strings:\n";
cout << "str1: " << str1 << endl;
cout << "str2: " << str2 << "\n\n";
// demonstrate insert()
cout << "Insert str2 into str1:\n";
str1.insert(6, str2);
cout << str1 << "\n\n";
return 0;
}
/*
Initial strings:
str1: String handling C++ style.
str2: STL Power
Insert str2 into str1:
StringSTL Power handling C++ style.
*/
string.insert( 3, string4, 0, string::npos )
#include <iostream>
using std::cout;
using std::endl;
#include <string>
using std::string;
int main()
{
string string1( "beginning end" );
string string2( "middle " );
string string3( "12345678" );
string string4( "xx" );
cout << "Initial strings:\nstring1: " << string1
<< "\nstring2: " << string2 << "\nstring3: " << string3
<< "\nstring4: " << string4 << "\n\n";
// insert string4 at location 3 in string3
string3.insert( 3, string4, 0, string::npos );
cout << "Strings after insert:\nstring1: " << string1
<< "\nstring2: " << string2 << "\nstring3: " << string3
<< "\nstring4: " << string4 << endl;
return 0;
}
/*
Initial strings:
string1: beginning end
string2: middle
string3: 12345678
string4: xx
Strings after insert:
string1: beginning end
string2: middle
string3: 123xx45678
string4: xx
*/