Do you know what is C++ Dictionary? Have you ever thought about how to create C++ Dictionary? Let us try to find out what is CPP Dictionary & how to create C++ Dictionary.
But before we start writing about the C++ Dictionary, let us try to find out its concept by analyzing one daily life example. This example will help to find out the necessity of the CPP Dictionary. After going through this example, we are sure that you are going to find out the answer to how to create C++ Dictionary.
Let us assume one scenario.
Suppose, you are fond of books. You always buy books from the store & love to read them. So, there is no doubt that in your house there will be many books present. Now, to arrange those books you need to have a space for them. Also, the space will be a different one. You need a space that will help to provide special status to a special book. A book which is very interesting & you often read it, that should be placed in a different place.
So, what will you do in such cases? Is there any bookshelf present that will help you in that case?
In that case, you can do some modifications to your bookshelf. For the books you read most of the time, you need to place them in a separate space on the bookshelf. And those books that are not so interesting one that should be placed in a completely different space on the bookshelf. It will help you to identify the books more easily.
The same thing goes for the CPP Dictionary. In CPP Dictionary, there is a need to place all the similar kinds of data. But there is another great feature present. In the CPP Dictionary, you can provide some key values to the element to find out it from the set of elements more easily. Having confused with the process?
There is no need to be worried about the existing confusion. We will clear the concept of the CPP Dictionary in the coming topics. It is our strong belief that at the end of this article, you will know the CPP Dictionary. But before we start writing about the C++ Dictionary & find out how to create C++ Dictionary, there is a need to briefly know about the C++ programming language.
Also, if you’re considering of learning then you can read our article ‘ How To Start Learning C In 5 Easy Steps?’
What Is C++ Programming Langauge? Read Below
Before we start writing about the CPP Dictionary, there is a need to know briefly about the C++ programming language. We believe that as a computer science student, you must know C++ programming language. But it is we believe that discussing from the very basics will help to provide crystal clear knowledge about a certain topic.
That is the reason, we are discussing the C++ programming language before the CPP Dictionary. In a very simple statement, we can write down that the C++ programming language is a high-level programming language & it is associated with the OOPs.
C++ is the programming language that is derived from the C programming language. It is like the bridge between a simple programming language & a very difficult programming language. C++ programming language can be associated with Java programming language. As it is a most important programming language it is used in the IT industry to develop several software.
C++ programming language has the features of the Object Oriented Programming Langauge. There are several similarities are present between the C programming language & OOPs Concept.
C++ programming language is very efficient as Python programming language. You can say that it is a gate pass to learning every difficult programming language. A developer who knows the C++ programming language can easily acquire knowledge of different other programming languages. We will find out more about this when we discuss the CPP Dictionary. The concept will more clear when you can able to answer the question of how to create C++ Dictionary. So, it is time to move ahead & learn about the C++ Dictionary.
What Is A C++ Dictionary? Get To Know
Now, it is time to discuss the C++ Dictionary. After this discussion, we are going to discuss how to create C++ Dictionary. You might be thinking that C++ Dictionary will help to find out words like a normal dictionary. But you are wrong here. The C++ Dictionary is not do anything with the words. But there is some similarity with the normal dictionary. In a normal dictionary, there is some key present that helps to find out the words from the set of words. In the C++ Dictionary, there are also some key values present.
C++ Dictionary is a container where a programmer can store a large number of elements. Now, you might ask in the array also, we can store the data, so what is the necessity of the C++ Dictionary? Now, in the array, can you find any element with a particular value? You can use the index number, but for that also, there is a need to know the particular index number. In the case of the C++ Dictionary, there you can store an unlimited number of elements that will not occupy much memory space. Also, the key values can be used for printing purposes.
Now, we can assume that the basic concept of C++ Dictionary is clear to you. It will be more clear when we discuss how to create C++ Dictionary. We are heading towards that topic. Now, to move to discuss how to create C++ Dictionary, we need to clear some things. In the C++ programming language, there is no Dictionary concept is present. It is a concept that is related to the Python programming language. But in the C++ programming language, there is a concept present that works the same as the dictionary, it is known as the Map. We will know more about it when we discuss how to create C++ Dictionary. But before that, there is a need to light on some highlights of the C++ Dictionary.
Highlights Of C++ Dictionary:
Now, before we move to answer the question of how to create a C++ Dictionary, there is a need to memorize some features or highlights related to the C++ Dictionary. We are going to make a list of highlights below. You need to remember it to easily implement the C++ Dictionary. Then we will move to answer how to create C++ Dictionary.
Let us try to make a list of highlights related to the C++ Dictionary. They are the following:
- There is no concept present in the C++ programming language as Dictionary. In the C++ programming language, there is a concept called Map. It works the same as the dictionary.
- The Dictionary works as the container in the C++ programming language. It helps to store a large number of data in it. All the data present here has some special key value.
- The elements that are inserted into the Dictionary will have the same data type. This means, in any case, there can be all integers or all string values can be stored.
- The key values of the Dictionary will also have the same data type with each other. This means, in any case, there can be all integers or all string values can be stored.
- To implement Dictionary in C++ programming language, there is a need to insert a special header file into the C++ programming language. We will learn more about it in the next topic.
- There is a need to use a loop every time to access all the data & the key values of the Dictionary in C++ programming language.
How To Create The C++ Dictionary?
Now, after having a piece of good knowledge about the Dictionary in C++ programming language, there is a need to implement it. for implementation purposes, we need to follow some steps. That is the reason, we have made the total process in a step-by-step format. Now, without wasting so much time, we will directly jump to the implementation process of the Dictionary in C++ programming language.
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Declaration Of The Header File:
There is a need to declare a separate header file in C++ programming. For using the Map concept in C++ programming, there is a need to declare a special header file. It is the file that will help to do all the operations on the Map concept. And as the Map is the Dictionary in C++ programming language, we need to import the #include <map> header file to the programming.
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Declaration Of The Map:
After we declared the header file in the programming, there is a need to declare the Map also. Just like different other concepts in programming, there is also a syntax of the Map in C++ programming language. we need to first provide the keyword ‘map’ for declaration. Then we are going to provide the data types of the Element & Key Values. At last, there is a need to provide the name of the Map in C++ programming language.
General Syntax: map<Element Data Type, Key Value Data Type>Map-Name;
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Providing Elements & Key Values:
After the declaration of the Map in C++ programming language, there is a need to provide the elements & key values to it. to provide the values, there is a need to follow a special method. The elements that are needed to be inserted into the Map in C++ programming language, should be placed in the braces. And the key values of these elements will be placed by assigning to them. We will know more about it when we implement the program below.
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Implementation Of Loop:
After doing all these things, there is a need to develop a loop. A loop is a special concept in the C++ programming language. There are several loops are present in the C++ programming language. There is a while loop, for loop, for each loop present. among them, there is a need to implement the for each loop. Because there is a need to access all the elements that are present in the Map in C++ programming language. To access these data, there is a need to use the Dot(.) operator. After the name of the Map in C++ programming language, we need to use two keywords to access them.
The first one will be the keyword ‘first’ which will help to access the elements that are inserted into the Map in C++ programming language. And the other one will be the ‘second’ keyword that will help to access the key values. We will know more about it when we implement the program below.
Now, it is time to implement a full program that will help to clear the concept of Map in the C++ programming language
Example:
#include <iostream> // Declaration Of The Header File #include <map> // The Necessary Important Header File For Dictionary #include <string> using namespace std; int main(){ map<string, string>storage; // Declaration Of Dictionary or The Map // Assigning Elements To Dictionary, First One Is The Element In The Braced & The Second One Is The Key Value storage["Books"] = "Shelf"; storage["Foods & Drinks"] = "Fridge";storage["Cloths"] = "Wardrobe"; for (auto element :storage) { // Running A For Loop To Get All The Elements cout<<element.first<<" Can Be Stored In "<<element.second<<endl; // Printing Each & Every Element }return 0;}
Let us try to find out the output of the above code. It will help to understand the process to implement Dictionary in C++ programming language.
Output:
Conclusion:
As we saw, it is very important to find out the C++ Dictionary. It is a very important topic that will be necessary for the future to solve difficult problems.
We need to remember those highlights related to the Dictionary in C++ programming language. It will help to memorize the process more easily.
There is a need to clear the basis of the C++ programming language to get this topic more easily. There is a need to start this topic from scratch to better understand it. We need to remember that there is no concept of a Dictionary present in the C++ Programming Language. It is the concept that will help us in the future.
So, hope you have liked this piece of article. Share your thoughts in the comments section and let us know if we can improve more.
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