Learn Introduction to String | Variables and Data Types

You can store text in variables using the string type. To do this, you'll need to include the string library, utilize the std namespace scope resolution, and declare a variable of the string type. This allows you to handle sequences of characters seamlessly in your programs.

main.cpp


              1234567891011
            
#include <iostream>
#include <string>

int main()
{
	// Declaring string variable
	std::string text = "codefinity";

	// Displaying string variable
	std::cout << text << std::endl;
}

Strings variables can also contain numbers (as text). However, it's important to note that while you can store numbers in this format, you cannot directly perform mathematical operations on these numbers while they're stored as strings.

main.cpp


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#include <iostream>
#include <string>

int main()
{
	std::string text = "1024";

	// Displaying string variable
	std::cout << text << std::endl;;
}

If you try to add two string variables, you get a concatenation (it works without spaces). The same thing will happen with numbers – they will not be added algebraically.

main.cpp


              1234567891011
            
#include <iostream>
#include <string>

int main()
{
	std::string first_part = "Hello "; //space is also a symbol
	std::string second_part = "World";

	//displaying the sum of string variables
	std::cout << first_part + second_part << std::endl;
}

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Section 3. Chapter 4

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main.cpp


              1234567891011
            
#include <iostream>
#include <string>

int main()
{
	// Declaring string variable
	std::string text = "codefinity";

	// Displaying string variable
	std::cout << text << std::endl;
}

main.cpp


              12345678910
            
#include <iostream>
#include <string>

int main()
{
	std::string text = "1024";

	// Displaying string variable
	std::cout << text << std::endl;;
}

If you try to add two string variables, you get a concatenation (it works without spaces). The same thing will happen with numbers – they will not be added algebraically.

main.cpp


              1234567891011
            
#include <iostream>
#include <string>

int main()
{
	std::string first_part = "Hello "; //space is also a symbol
	std::string second_part = "World";

	//displaying the sum of string variables
	std::cout << first_part + second_part << std::endl;
}

Everything was clear?

Thanks for your feedback!

Section 3. Chapter 4