String

String

•  String is a collection of characters. In C++ we can write strings in two ways –

1) C‒style Strings

The C‒style strings can be represented as arrays of characters ending with null character '\0'.

C++ Program

#include<iostream>

using namespace std;

int main() {

     char s1[] = "Hello";

     char s2[] = "Friends";

     cout<<"First String is: "<<s1<<endl;

     cout<<"Second String is: "<<s2<<endl;

     return 0;

}

Output

First String is: Hello

Second String is: Friends

2) C++ string class

The C++ string class is provided by Standard Template Library(STL). This class is defined in the header <string>

C++ program

#include<iostream>

#include<cstring>

using namespace std;

int main() {

      string s1 = "Hello";

      string s2 = "Friends";

      cout<<"First String is: "<<s1<<<endl;

      cout<<"Second String is: "<<s2<<endl;

      cout<<"Concatenated String is: "<<s1+s2<<endl;

      cout<<"Length of First string is: "<<s1.length()<<endl;

      return 0;

}

Output

First String is: Hello

Second String is: Friends

Concatenated String is: HelloFriends

Length of First string is: 5