In this article, we will discuss what is a std::vector<> and how to use it in C++. What is a vector in C++? A vector is a STL Container, which acts like a dynamic array. It can grow or shrink as needed, and provides a number of useful member functions for working with the elements …
In this article, we will learn how to remove certain characters from a string in C++. Table Of Contents Problem Description Method 1: Using while loop Method 2: Using STL function for_each(), erase() and remove() Special Notes about remove() and erase() Summary Problem Description Suppose we have a string sampleStr, and an array of characters …
In this article, we will discuss all about vector’s erase() function, and how to use the vector::erase() function in C++. Table Of Contents Remove single element from vector using erase() Removing multiple elements from vector using erase() function Using vector::erase() function in the for loop Summary In C++, the vector class provides a function erase() …
In C++, the vector class provides a function insert(), to insert single or multiple elements before the element at the specified position. It increases, the size of vector by n. Where n is the number of elements inserted. Table Of Contents Introduction Using insert() function to insert single element in vector Using insert() function to …
The article here discusses various ways to convert an input string to a vector of bytes in C++. Table Of Contents Method 1: Using a For Loop Method 2: Using std::vector Constructor Method 3: Using std::transform method Method 4: Using std::copy() method Summary Method 1: Using a For Loop This program creates a string called …
In this article, we will discuss how to print a vector using std::cout in C++. By default we can directly pass a vector object to the cout in C++. As, ‘cout’ calls the operator<<() function of each passed object. So, we can overload a operator<< function of vector like this, It is a template function, …
In C++ the vector class provides a function at() to return the value at the given index position. Let us see the syntax of the function, Table Of Contents Syntax of vector::at() function Example of vector::at() vector::at() and out_of_range exception Update vector using vector::at() Summary Syntax of vector::at() function It accepts an index position “n”, …
In C++, the vector class provides a function pop_back(). It removes the last element from the calling vector object. Table Of Contents Syntax of vector::pop_back(): Example of vector::pop_back() function Calling vector::pop_back() function on empty vector Remove all elements from vector using vector::pop_back() Summary Syntax of vector::pop_back(): Parameters: None Return value: None It accepts no argument, …
In C++, the vector class provides a member function push_back(). It accepts an element as an argument, and adds that element to the end of the vector. Basically it increases the size of the vector by one. As per vector’s internal implementation, sometimes it might be possible the due to addition of an element at …
In C++, the vector class provides a function clear(). It removes all elements from the calling vector object. It will make the size of vector 0. Table Of Contents Syntax of vector::clear(): Examples of vector::clear() Example 1 Example 2 Summary Syntax of vector::clear(): Parameters: None Return value: None Examples of vector::clear() Let’s see some examples …