In C#, a verbatim string is created using a special symbol @. @ is known as a verbatim identifier. If a string contains @ as a prefix followed by double quotes, then compiler identifies that string as a verbatim string and compile that string. The main advantage of @ symbol is to tell the string constructor to ignore escape characters and line breaks. There is mainly three uses of @ symbol which is as follows:
Use 1: Keyword as an Identifier
This symbol allows using a keyword as an identifier. The @ symbol prefixes the keyword, so the compiler takes keyword as an identifier without any error as shown in the below example:
Element of Array: C# Element of Array: PHP Element of Array: Java Element of Array: Python
Use 2: For printing the escape sequences in string literals and also using the line breaks etc. in a string literal without any escape sequence.
If one will put the escape sequence like “\” (for backslash), “u” (Unicode escape sequence), “x” (hexadecimal escape sequence) etc. in a string literal without using @ symbol then these sequences will be interpreted by compiler automatically. But “” (double quotes) are not interpreted literally. Its like a string interpolation. Let’s see different cases with and without @ symbol.
- Case 1:
// taking a string literal and // try to print double quotes string str1 = """"; // printing output // this will give compile // time error as Unexpected // symbol `' Console.WriteLine(str1);
In the above program, the double quotes inside double quotes as a string literal are interpreted as a single quotation mark.
- Case 2:
// taking a string literal prefixes // with @ and try to print double quotes string str1 = @""""; // printing output // this will ouput as " Console.WriteLine(str1);
In the above program, the output is double quote(“) not “”
- Case 3:
// taking a string in which we are storing // some location of file but Testing will // interpreted as eascape sequence T // similarly N string str1 = "\C:TestingNewTarget"; // printing str1 // this will give compile time error as // Unrecognized escape sequence `T' // Unrecognized escape sequence `N' // Unrecognized escape sequence `T' Console.WriteLine(str1);
- Case 4:
// taking a string and prefix literal with @ symbol. // Storing some location of file string str1 = @"\C:TestingNewTarget"; // printing str1 will give output as // \C:TestingNewTarget Console.WriteLine(str1);
String 2 is: \welcome o GeeksforGeeks portal String 3 is :This is C# non verbatim string String 4 is :This is C# verbatim string Without Tab Sequence and New Line Character C C++ Java Python