Assignment operators are +=, -=, *=, /=, %=.
Conditional operator ?: is the operator that is used in place of if-else. e.g.
f = (a>b)?c:d, this means if a>b, then f =c else f=d. sizeof operator
provides the size of variable in bytes. Comma operator is used to separate
multiple expressions in single line. Scope resolution operator :: is used to
distinguish between global and local variable that have same name in the
program. Expression is an operand or a combination of operands and operators
which, when evaluated, yields a single value. Expressions are constructs,
denoting rules of computation for obtaining values of variables and generating
new value by the application of operators. Expressions comprise of operators
and operands, i.e. variables, constants and functions. Type conversion is
sometimes required in the expressions in C++, because unsigned variables do not
change to higher value data types automatically, so we need to specify
temporary data type change of the variable in order to keep the accuracy of the
output of the expression. Syntax is : (data type) expression e.g. (double)a.
Order of Precedence provides the sequence to compute expression having
different operators. First Multiplication, division, modulus, remainder,
addition, subtraction. On the top of this order of precedence is Parentheses.
