Literals And Escape Sequence In C++

Posted on December 4, 2023 by Vishesh Namdev

Python C C++ Javascript Java

Literal is a notation for representing a fixed value in source code. Literals can be used to express constants of various types, such as integers, floating-point numbers, characters, and strings. C++ supports several types of literals, and each type has its own syntax.

Here are some common types of literals in C++:

1. Integer Literals:

int decimalLiteral = 42 ;
int octalLiteral = 052 ; // Octal (prefix 0)
int hexadecimalLiteral = 0x2A ; // Hexadecimal (prefix 0x or 0X)

2. Floating-point Literals:

double standardFloatLiteral = 3.14 ;
double scientificFloatLiteral = 2.0e5 ; // 2.0 * 10^5

3. Character Literals:

char singleCharLiteral = ' A ';
char escapeCharLiteral = ' '; // Newline character

4. String Literals:

const * stringLiteral = " Hello, World! ";

5. Boolean Literals:

bool trueLiteral = true ;
bool trufalseLiteraleLiteral = false ;

Escape Sequence

Escape sequence is a special combination of characters that starts with a backslash and is used to represent special characters or actions within strings. For example, represents a newline, represents a tab, "" represents a double quote, and so on. Escape sequences make it easier to include certain characters in strings.

Example of Escape Sequence:-

#include <iostream> Copy Code

int main () {
std::cout << " Hello, World! This is a new line. ";
std::cout << " This is tab separated. ";
std::cout << " This is a backslash: \ and this is a quote: "" ";
return 0 ;
}