The CDC's recommendation that doctors give every pregnant woman a Tdap vaccination during every pregnancy â regardless of whether a woman has already received one dose of Tdap â is an off-label use of the vaccine.
Literals and Constants in C#. Literal is a source code representation of a value, i.e. it is a value that has been hard-coded directly into your source. x is a variable, and 100 is a literal.
1 Primitive types permit values to be created by writing literals. For example, 123I is a literal of type Integer. 2  It is possible to declare constants of the primitive types.  When the operands of an expression are all primitive type constants, it is possible for the compiler to evaluate the expression at compile time.