MAP - INSERT() METHOD

The insert() Method is used to insert a new Entry in a Map

Let us say, we have a Map that contains,

Five, Is a Number

John, Is a Name

C++, Is a Language

As Key and Value pair.

Now, let us say, we want to insert a new entry,

Rose, Is a Flower

Where Rose is the Key and Is a Flower is its corresponding Value.

Let us see in the below example.

Example :

#include <iostream>
#include <map>

using namespace std;

int main() {

    map<string, string> x =
        {
	        { "Five", "Is a Number" },
	        { "John", "Is a Name" },
	        { "C++", "Is a Language"}
        };

    x.insert({"Rose", "Is a Flower"});

    for (auto i : x)
    {
        cout << "The Key is : " << i.first << " and the Value is :"  << i.second << endl;
    }

    return 0;
}

Output :

The key is : Five and the value is : Is a Number
The key is : John and the value is : Is a Name
The key is : C++ and the value is : Is a Language
The key is : Rose and the value is : Is a Flower

So, in the above code we have created a Map using braces {} and Key and Valuepairs.

map x =
	{
		{ "Five", "Is a Number" },
		{ "John", "Is a Name" },
		{ "C++", "Is a Language"}
	};

And initialised to the variable x.

Now, we are supposed to add a new entry to the Map. Where the Key would beRose and the Value Is a Flower.

So, we have used the insert() method to add it.

x.insert({"Rose", "Is a Flower"});

And the entry is added to the Map.

And we get the below output,

NEXT ❯❯