Types of operators in C

C Operators
1. Arithmetic operators
2. Relational Operators
3. Logical Operators
4. Assignment Operators
5. Increments and Decrement Operators
6. Conditional Operators
7. Bitwise Operators
8. Special Operators

Arithmetic operators
Operator Meaning
+ Addition or Unary Plus
– Subtraction or Unary Minus
* Multiplication
/ Division
% Modulus Operator

Integer Arithmetic
Let x = 27 and y = 5
z = x + y  32
z = x – y  22
z = x * y  115
z = x % y  2
z = x / y  5

Floating point arithmetic
Let x = 14.0 and y = 4.0 then
z = x + y  18.0
z = x – y  10.0
z = x * y  56.0
z = x / y  3.50

Mixed mode arithmetic
15/10.0 = 1.5

Relational Operators
Operator Meaning
< is less than
<= is less than or equal to
> is greater than
>= is greater than or equal to
== is equal to
!= is not equal to

Relational Expressions
6.5 <= 25 TRUE
-65 > 0 FALSE
10 < 7 + 5 TRUE

Logical Operators
Operator Meaning
&& Logical AND
|| Logical OR
! Logical NOT

Find out the answer
a > b && x = = 10
a < m || a < n
! (x >= y)
a = 5
b = 4
x=10, y = 9
m=6
n = 3

Assignment Operators
Statement with simple
assignment operator
Statement with
shorthand operator
a = a + 1 a += 1
a = a – 1 a -= 1
a = a * (n+1) a *= (n+1)
a = a / (n+1) a /= (n+1)
a = a % b a %= b

What is the output?
#define N 100 //creates a variable N with constant value 100
#define A 2 //creates a variable A with constant value 2
main() //start of the program
{
int a; //variable a declaration
a = A; //assigns value 2 to a
while (a < N) //while value of a is less than N
{ //evaluate or do the following
printf(“%d n”,a); //print the current value of a
a *= a; //shorthand form of a = a * a
} //end of the loop
} //end of the program
Output
2
4
16

Increment and Decrement
Operators
1. ++ v
2. v++
3. – –v
4. V--
m = 5;
y = ++m; (prefix)
After Execution:
y=6, m=6
m = 5;
y = m++; (post
fix)
After Execution:
y=5, m=6

Conditional or Ternary
Operator
a = 10;
b = 15;
x = (a > b) ? a : b

Bitwise Operators
Operator Meaning
& Bitwise AND
| Bitwise OR
^ Bitwise Exclusive
<< Shift left
>> Shift right

Special Operators
comma operator
size of operator
pointer operators (& and *)
member selection operators (. and ->).

The Comma Operator
value = (x = 10, y = 5, x + y);
In for loops:
for (n=1, m=10, n <=m; n++,m++)
In while loops
While (c=getchar(), c != ‘1’)
Exchanging values
t = x, x = y, y = t;

The size of Operator
m = sizeof (sum);
n = sizeof (long int);
k = sizeof (235L);

What is the output?
main() //start of program
{
int a, b, c, d; //declaration of variables
a = 15; b = 10; c = ++a-b; //assign values to variables
printf (“a = %d, b = %d, c = %dn”, a,b,c); //print the values
d=b++ + a;
printf (“a = %d, b = %d, d = %dn, a,b,d);
printf (“a / b = %dn, a / b);
printf (“a %% b = %dn, a % b);
printf (“a *= b = %dn, a *= b);
printf (“%dn, (c > d) ? 1 : 0 );
printf (“%dn, (c < d) ? 1 : 0 );
}

Types of operators in C

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Types of operators in C