C++C++17IteratorsLearn C++

How To Use Insert In std::map In Modern C++

How To Use Insert In stdmap In Modern C++

Modern C++ is amazing with many great features. In C++, STL Standard Template Library has many algorithms for some operations like searching, counting, and manipulation of ranges and their elements. In this post you can learn C++ feature called std::map that you can map pair elements with an appropriate C++ IDE and compiler. One of its powerful modifiers of std::map is insert(). In this post we will explain how to use the C++ std::map insert() function.

What is std::map in Modern C++?

std::map is a sorted associative container found in the C++ Standard Template Library (STL) that stores key-value pairs with unique keys. Each member has a unique key value and a mapped value. Two or more mapped values cannot have the same key values – the key needs to be unique. When using std::map, key values are sorted by using the comparison function compare. Compare.

Here is the Syntax for the std::map (Since C++17);

Is there a simple Example of how to use Insert in std::map in Modern C++?

The insert method of std::map can be used as given in this syntax below,

This allows us to have string and integer values in our map. If you want to make string values key values that will be sorted, you can use std::map as below:

if you want, you can directly declare members of this map as below,

Is there a complete example of how to use Insert in std::map in Modern C++?

Here is a full example.

Here are a few more examples of how to use Insert in std::map in Modern C++

std::pair can be used inside the insert method as below,

you can add multiple pairs as below,

you can create a new map by using insert as below too,

std:map is a very strong sorted associative container, it uses iterators like begin() and end(), and in addition to insert() it has other modifiers like clear(), erase(), swap(), etc.

How To Use Insert In stdmap In Modern C++ the C++ Builder Logo

C++ Builder is the easiest and fastest C and C++ IDE for building simple or professional applications on the Windows, MacOS, iOS & Android operating systems. It is also easy for beginners to learn with its wide range of samples, tutorials, help files, and LSP support for code. RAD Studio’s C++ Builder version comes with the award-winning VCL framework for high-performance native Windows apps and the powerful FireMonkey (FMX) framework for cross-platform UIs.

There is a free C++ Builder Community Edition for students, beginners, and startups; it can be downloaded from here. For professional developers, there are Professional, Architect, or Enterprise versions of C++ Builder and there is a trial version you can download from here.


Oh hi there 👋
It’s nice to meet you.

Sign up to receive awesome C++ content in your inbox, every day.

We don’t spam! Read our privacy policy for more info.

About author

Dr. Yilmaz Yoru has 35+ years of coding with more than 30+ programming languages, mostly C++ on Windows, Android, Mac-OS, iOS, Linux, and some other operating systems. He graduated and received his MSc and PhD degrees from the Department of Mechanical Engineering of Eskisehir Osmangazi University. He is the founder and CEO of ESENJA LLC Company. His interests are Programming, Thermodynamics, Fluid Mechanics, Artificial Intelligence, 2D & 3D Designs, and high-end innovations.
Related posts
C++C++17C++20Introduction to C++Learn C++

When Is The CMath Mathematical Special Functions Header Used in Modern C++?

C++C++17C++20Introduction to C++Learn C++

What Are The CMath Mathematical Special Functions in Modern C++?

C++C++17C++20Learn C++

What Are The New Rules For Auto Deduction In C++ 17?

C++C++14C++17Learn C++Syntax

What Are The New Overloads For Ranges In C++ 14?