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Expression In C++

An expression is composed of one or more operations. The objects of the operations are referred to as operands. An expression in C++ is any valid combination of operators, constants, and variables.
 
Type of expressions
 
Arithmetic Expression
 
Arithmetic expression can either be integer expression or real expression, some times a mixed expression can also be formed with a mixture of real and integer expression.
 
Integer expression-
 
int a=10, b=3, c=4, d=213; . a+b, a*d etc
 
Real expression-
 
float x=1.20, y=23.63, z=23.23; . x+y, x*z etc.
 
Logical expression
 
The expression that result into 0 or 1 are called logical expression. The logical expression are the combination of constants, variable and logical and relational operator.
 
The following are the examples of valid logical expression:
 
. x>y, (-y), (x-y) etc.
 
C++ Escape Sequences
 
Escape sequences are character constants that are usually used to format text.
 
Here are the most common:
 
Common Escape Sequences
 
\a Bell
 
\b Backspace
 
\f Formfeed
 
\n New Line
 
\r Carriage Return
 
\t Horizontal Tab
 
\v Vertical Tab
 
\’ Single quote
 
\” Double quote
 
\\ Backslash

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