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std::string::push_back() in C++
  • Difficulty Level : Basic
  • Last Updated : 06 Jul, 2017

The push_back() member function is provided to append characters. Appends character c to the end of the string, increasing its length by one.
Syntax :

void string:: push_back (char c)
Parameters:  Character which to be appended. 
Return value: None
Error: throws length_error if the 
resulting size exceeds the maximum number of characters(max_size).




// CPP code for to illustrate 
// std::string::push_back()
   
#include <iostream>
#include <string>
using namespace std;
   
// Function to demonstrate push_back()
void push_backDemo(string str1, string str2)
{
    // Appends character by character str2
    // at the end of str1
    for(int i = 0; str2[i] != '\0'; i++)
    {
        str1.push_back(str2[i]);
    }
    cout << "After push_back : ";
    cout << str1;
}
          
// Driver code
int main()
{
    string str1("Geeksfor");
    string str2("Geeks");
  
    cout << "Original String : " << str1 << endl;
    push_backDemo(str1, str2);
   
    return 0;
}

Output:

Original String : Geeksfor
After push_back : GeeksforGeeks

This article is contributed by Sakshi Tiwari. If you like GeeksforGeeks(We know you do!) and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

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