C++ String push_back() function

C++ String push_back() 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 push_back()

This function is used to add new character ch at the end of the string, increasing its length by one.

Syntax

Consider a string s1 and character ch . Syntax would be :

s1.push_back(ch);

Parameters

ch : New character which is to be added.

Return value

It does not return any value.

Example 1

Let's see simple example.

#include<iostream>
using namespace std;
            int main()
           {
           string s1 = "Hell";
           cout<< "String is :" <<s1<<'\n';
           s1.push_back('o');
           cout<<"Now, string is :"<<s1;
          return 0;   
           }

Example 2

Let's consider another simple example.

#include<iostream>
using namespace std;
int main()
{
string str = "java tutorial ";
cout<<"String contains :" <<str<<'\n';
str.push_back('1');
cout<<"Now,string is : "<<str;
return 0; 
}

Output:

String contains :java tutorial
Now,string is java tutorial 1

Example 3

Let's see the example of inserting an element at the end of vector.

#include<iostream>
#include<vector>
using namespace std;
int main()
{
vector<char> s;
s.push_back('j');
s.push_back('a');
s.push_back('v');
s.push_back('a');
for(int i=0;i<s.size();i++)
cout<<s[i];
return 0;
}

Output:

Java

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