4.Relational Operator
It is use to compared value of two expressions depending on their relation.
Expression that contain relational operator is called relational expression.
Here the value is assign according to true or false value.
a.(a>=b) || (b>20)
b.(b>a) && (e>b)
c. 0(b!=7)
5. Conditional Operator
It sometimes called as ternary operator. Since it required three expressions as
operand and it is represented as (? , :).
SYNTAX
exp1 ? exp2 :exp3
Here exp1 is first evaluated. It is true then value return will be exp2 . If false then
exp3.
EXAMPLE
void main()
{
int a=10, b=2
int s= (a>b) ? a:b;
printf(“value is:%d”);
}
Output:
Value is:10
6. Comma Operator
Comma operator is use to permit different expression to be appear in a situation
where only one expression would be used. All the expression are separator by
comma and are evaluated from left to right.
EXAMPLE
int i, j, k, l;
for(i=1,j=2;i<=5;j<=10;i++;j++)
7. Sizeof Operator
Size of operator is a Unary operator, which gives size of operand in terms of byte
that occupied in the memory. An operand may be variable, constant or data type
qualifier.
Generally it is used make portable program(program that can be run on different
machine) . It determines the length of entities, arrays and structures when their size
are not known to the programmer. It is also use to allocate size of memory
dynamically during execution of the program.
EXAMPLE
main( )
{
int sum;
float f;
printf( "%d%d" ,size of(f), size of (sum) );
printf("%d%d", size of(235 L), size of(A));
}
