The C++ insert() program example part I

Compiler: Visual C++ Express Edition 2005

Compiled on Platform: Windows XP Pro SP2

Header file: Standard

Additional library: none/default

Additional project setting: Set project to be compiled as C++

Project -> your_project_name Properties -> Configuration Properties -> C/C++ -> Advanced -> Compiled As: Compiled as C++ Code (/TP)

Other info: none

To do: Inserts an element or a number of elements or a range of elements into the string at a specified position using insert() in C++ programming

To show: How to use the insert() function to an element or a number of elements or a range of elements into the string at a specified position in C++ programming

// the C++ insert() example part I

#include <string>

#include <iostream>

using namespace std;

int main(void)

{

// inserting a C-string at a given position

basic_string <char> str1("e insert() testing");

const char *cstr1 ="Th";

cout<<"str1 = "<<str1<<endl;

cout<<"cstr1 = "<<cstr1<<endl;

str1.insert(0, cstr1);

cout<<"Operation: str1.insert(0, cstr1)"<<endl;

cout<<"Inserting a C-string at position 0 is: "<<str1<<endl;

cout<<endl;

// inserting a C-string at a given position for a specified number of elements

basic_string <char> str2("Test");

const char *cstr2 ="ing an insert()";

cout<<"str2 = "<<str2<<endl;

cout<<"cstr2 = "<<cstr2<<endl;

str2.insert(4, cstr2, 15);

cout<<"Operation: str2.insert(4, cstr2, 15)"<<endl;

cout<<"Inserting a C-string at the end is: "<<str2<<endl;

cout<<endl;

// inserting a string at a given position

basic_string <char> str3(" the insert()");

string str4("Testing");

cout<<"str3 = "<<str3<<endl;

cout<<"str4 = "<<str4<<endl;

str3.insert(0, str4);

cout<<"Operation: str3.insert(0, str4)"<<endl;

cout<<"Inserting string at position 0 is: "<<str3<<endl;

cout<<endl;

// inserting part of a string at a given position

basic_string <char> str5("Testing ");

string str6(" the insert()");

cout<<"str5 = "<<str5<<endl;

cout<<"str6 = "<<str6<<endl;

str5.insert(7, str6, 4, 9);

cout<<"Operation: str5.insert(7, str6, 4, 9)"<<endl;

cout<<"Inserting part of a string at position 9 is: "<<str5<<endl;

return 0;

}

Output example:

str1 = e insert() testing

cstr1 = Th

Operation: str1.insert(0, cstr1)

Inserting a C-string at position 0 is: The insert() testing

str2 = Test

cstr2 = ing an insert()

Operation: str2.insert(4, cstr2, 15)

Inserting a C-string at the end is: Testing an insert()

str3 = the insert()

str4 = Testing

Operation: str3.insert(0, str4)

Inserting string at position 0 is: Testing the insert()

str5 = Testing

str6 = the insert()

Operation: str5.insert(7, str6, 4, 9)

Inserting part of a string at position 9 is: Testing insert()

Press any key to continue . . .

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