C++ String append
This function is employed to elongate the string by adding content to the end of the existing value.
Syntax
Consider string str1 and str2. Syntax would be :
Example
Str1.append(str2);
Str1.append(str2,pos,len);
Str1.append(str2,n);
Parameters
str: A String object that needs to be concatenated with another String object.
It specifies the index of the initial character to add to a different object.
The variable len represents the number of characters that will be copied into another string object as a substring.
n : Number of characters to copy.
Return value
This function does not return any value.
Example 1
Let's explore an example of adding a string to another string object.
Example
#include<iostream>
using namespace std;
int main()
{
string str1="Welcome to C++ programming";
string str2="language";
cout<<"Before appending,string value is"<<str1<<'\n';
str1.append(str2);
cout<<"After appending, string value is"<<str1<<'\n';
return 0;
}
Output:
Output
Before appending,string value is Welcome to C++ programming
After appending,string value is Welcome to C++ programming language
Example 2
Let's explore an example of extending a string by specifying both the starting position and the length as parameters.
Example
#include<iostream>
using namespace std;
int main()
{
string str1 = "Mango is my favourite" ;
string str2 ="fruit";
cout<<"Before appending, string value is :" <<str1<<'\n';
str1.append(str2,0,5);
cout<<"After appending, string value is :" <<str1<<'\n';
return 0;
}
Output:
Output
Before appending, string value is Mango is my favourite
After appending, string value is Mango is my favourite fruit
Example 3
Let's see another example.
Example
#include<iostream>
using namespace std;
int main()
{
string str1 = "Kashmir is nature";
str1.append("of beauty",9) ;
cout<<"String value is :"<<str1;
return 0;
}
Output:
Output
String value is Kashmir is nature of beauty
