Problems with String in C++

[AmoghS]

Hi

I just started learning programming language. In C++ i am facing problems with string i not understood string properly if anyone know about strings in C ++ please let me know

Thanks

[ADISH]

In C++ there are C-style strings and C++-style strings available. It indicates that the one-dimensional char, wchar_t, byte (or equivalent) array or the pointer to such an array must be treated as a string.

Example

// cpp_attr_ref_string.cpp
// compile with: /LD
#include "unknwn.h"
[module(name="ATLFIRELib")];
[export, string] typedef char a[21];
[dispinterface, restricted, uuid("00000000-0000-0000-0000-000000000001")]
__interface IFireTabCtrl
{
   [id(1)] HRESULT Method3([in, string] char *pC);
};

[Santosh12]

c_str Syntax:

#include <string>
    const char* c_str();

The function c_str() returns a const pointer to a regular C string, identical to the current string. The returned string is null-terminated.

[MATSU]

string is anything that contains more than one character strung together. Here is the Example.

#include <iostream>
#include <string>
using namespace std;

int main () 
{
    char *line = "short line for testing";
    
    // with no arguments
    string a1;
    a1 = "Anatoliy";
    cout << "a1  is: " << a1 << endl;

    // copy constructor
    string a2 (a1);
    cout << "a2  is: " << a2 << endl;

    // one argumen
    string a3 (line);
    cout << "a3  is: " << a3 << endl;

    // first argumen C string
    // second number of characters
    string a4 (line,10);
    cout << "a4  is: " << a4 << endl;

    // 1 - C++ string
    // 2 - start position
    // 3 - number of characters
    string a5 (a3,6,4); // copy word 'line' from a3
    cout << "a5  is: " << a5 << endl;

    // 1 - number characters
    // 2 - character itself
    string a6 (15,'*');
cout << "a6  is: " << a6 << endl;

    // 1 - start iterator
    // 2 - end iterator
    string a7 (a3.begin(),a3.end()-5);
    cout << "a7  is: " << a7 << endl;

    // you can instantiate string with assignment
    string a8 = "Anatoliy";
    cout << "a8  is: " << a8 << endl;

    return 0;
}