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C++ String append() function

C++ String append function tutorial for beginners and professionals with examples on constructor, if-else, switch, break, continue, comments, arrays, object and class, exception, static, structs, inheritance, aggregation etc.

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C++ String append()

This function is used to extend the string by appending at the end of the current value.

Syntax

Consider string str1 and str2. Syntax would be :

Str1.append(str2);
Str1.append(str2,pos,len);
Str1.append(str2,n);

Parameters

str : String object which is to be appended in another string object.

pos : It determines the position of the first character that is to be appended to another object.

len : Number of characters to be copied in another string object as substring.

n : Number of characters to copy.

Return value

This function does not return any value.

Example 1

Let's see the example of appending the string in another string object.

#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:

Before appending,string value is Welcome to C++ programming
After appending,string value is Welcome to C++ programming language

Example 2

Let's see the example of appending the string by using position and length as parameters.

#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:

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.

#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:

String value is Kashmir is nature of beauty

Next TopicC++ Strings




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