Concatenate MeaningIn formal English, the term Concatenate is defined as an operation to join or link something together. The same concept is taken to define the operation of concatenation in computer programming. Computer programmers commonly use concatenation for joining end-to-end character strings. For example, the concatenation of "Hello" + "World" will fetch you the output as "HelloWorld". In many programming languages, string concatenation has its own pre-defined function such as concat(), join(), etc., or the coders can concatenate two or more strings in the program using the '+' (plus) operator. Note: If you are concatenating a variable of non-string type with a string, you first need to cast that variable into a string.In this tutorial we will discover how Concatenation is done in different programming languages with the help of examples. Concatenate in C1. Using LoopsThe first method to concatenate two strings in C is by loops. Program Output: After concatenation: Concatenate in C programming Explanation: In the above example, we have taken two strings and have named them str1 and str2 respectively. Have applied while and for loop to concatenate both the strings and later have stored the result in str1. NOTE: Please make sure that the length of str1 should be sufficient to store the output after concatenating the string. If the length is short, the C compiler may throw some expected error.2. Using strcat()In C programming, there is an inbuilt function strcat(), used to concatenate two string values. Syntax Parameter
Program Output: Enter the first number: 34 Enter the second number: 23 The output after concatenation: 3423 Example: In the above program, we have used the inbuilt strcat() function to concatenate two strings. As you can see, it has taken two strings, i.e., str1 and str2, as its parameters, and then appends the str2 at the end of the str1 (first string). Concatenate in C++In C++, you can concatenate two strings together using + (string concatenation) operator or by append() function. 1. By '+' (string concatenation) operatorIn C++, the programmers can leverage the advantage of the '+' operator to append two strings together to create a new string. This process is known as concatenation. Example Output: 2. C++ Append() functionA string in C++ is actually an object, which contains functions that can perform certain operations on strings. For example, you can also concatenate strings with the append() function: Syntax Parameters
Example: Output: Concatenate in JavaIn java, you can concatenate two different strings together using concat() function and also the same string to itself multiple times using + operator or respectively. 1. By + (string concatenation) operatorJava concatenation operator (+) is used to combine two string values to create one new string. Example JavaStringConcatenate.java Output: 2. Java concat() methodThe concat() method in Java appends the given second string to the end of the first string and stores it to a new string. Syntax: Parameters
Example Output: Concatenation in PHP1. '.' OperatorPHP string concatenation operator (.) adds two strings. Example Output: Reema Panda 2. '.=' OperatorThe PHP Concatenation assignment represented by '.=' operator is used to combine two strings. Example Output: Hello World! Concatenation in Python1. Use the + (string concatenation) operatorThe Python '+' (string concatenate) operator is used to combine two different strings together. Example Output: 2. Using join() methodThe Python join() is a string method that concatenates the string with the elements of iterable. Syntax Parameters strName: This represents the name of a string where the elements of iterable will be stored. iterable: This parameter represents the objects that are capable of returning its elements one at a time. It could be List, Tuple, String, Set, etc., Return The join() method in Python returns the concatenated string. Example: Output: Concatenate in C#1. Using '+' operatorIn C# two strings can be concatenated using the '+' operator. Example Output: 2. Using the String.Concat MethodThe String.Concat method in C# concatenates one or more instances of String and returns a concatenated string. Syntax Parameters str1 (required): This parameter represents the first string to concatenate. str2 (required): It represents the second string to concatenate. Return This method returns a concatenated string. Example: Output:
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