C Literals

In the C programming language, a literal is a value that appears directly in the source code. There are several types of literals in C, including:

1. Integer literals –
   An integer literal is a whole number without a fractional component, such as 42 or -17.

   int a = 42;
   long b = -17;
   unsigned int c = 123456;
   

2. Floating-point literals –
   A floating-point literal is a number with a fractional component, such as 3.14 or -0.5.

   float d = 3.14;
   double e = -0.5;
   long double f = 0.000001;
   

3. Character literals –
   A character literal is a single character surrounded by single quotes, such as ‘A’ or ‘$’.

   char g = 'A';
   char h = '$';
   

4. String literals –
   A string literal is a sequence of characters surrounded by double quotes, such as “hello” or “Good morning!”.

   char *i = "hello";
   char *j = "Good morning!";
   

5. Boolean literals –
   A boolean literal is either the value true or false.

   _Bool k = true;
   _Bool l = false;
   

Each type of literal has a specific type in C and must be used in the appropriate context. For example, an integer literal can be used as an argument to a function that takes an int, while a string literal can be used as an argument to a function that takes a char * or a string. Literals play an important role in C programming, as they provide a way to represent constant values in your code.

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