Enter l if the year is leap year otherwise enter n: l
Number of days in February = 29
Other operators such as &(reference operator), *(dereference operator) and ->(member selection) operator will be discussed in pointer chapter.
Precedence And Associativity Of Operators
Precedence of operators
If more than one operators are involved in an expression then, C language has predefined rule of priority of operators. This rule of priority of operators is called operator precedence.
In C, precedence of arithmetic operators(*,%,/,+,-) is higher than relational operators(==,!=,>,<,>=,<=) and precedence of relational operator is higher than logical operators(&&, || and !). Suppose an expression:
(a>b+c&&d)
This expression is equivalent to:
((a>(b+c))&&d)
i.e, (b+c) executes first
then, (a>(b+c)) executes
then, (a>(b+c))&&d) executes
Associativity of operators
Associativity indicates in which order two operators of same precedence(priority) executes. Let us suppose an expression:
a==b!=c
Here, operators == and != have same precedence. The associativity of both == and != is left to right, i.e, the expression in left is executed first and execution take pale towards right. Thus, a==b!=c equivalent to :
(a==b)!=c
The table below shows all the operators in C with precedence and associativity.
Note: Precedence of operators decreases from top to bottom in the given table.
Summary of C operators with precedence and associativity
Operator
Meaning Of Operator