C language operators with examples

a) Arithmetic operation:-

These operators to calculate mathematical operations.these are-, +,*,%,÷.

  Subtraction(-)

  • it is used to subtract two operands
  • A-B=1
  • A=3,B=2

 Addition (+)

  • It is useful to add two operands
  • A+B=5  (refer example 3)

  Multiplication (*)

  • It is used to multiplies two operands
    A*B=6 

  Division (/)

  • It is used to divides numerator by de-numerator 
  • A/B=1  (refer example 1&2)

%Remainder

  •  It is useful to get remainder
  •  A%B=0

 

Example 1)Division:-


                 int a, b;
       float c;
       c=a/b
       
Result :
                 a=10
                  b=3
                 3.000
                 To get 3.333 in result
                 We have to small change see below program

Example 2)Division

               Int a, b;
               Float c;
               c=a/b*1.0

Example 3)Addition:-

             int a, b;
              float c;
             C=a+b

b ) Relational operators

These operators are used to compare two Numbers, ==,>,>,<
if the condition is true them the result will be 1 otherwise result will be 0

Example 1)

              int a, b, c;
              a=10;
              b=3;
              c=a==b;
Now c is zero condition is false

Example 2)

int a,b,c;
a=100;
b=55;
c=a> b;
now c is one because condition is true;

C) Logical operators

In these operations, every operator perform different operation
&&
||
!

         Truth table for && operator


            T  T T
           T  F  F
           F  T  F
           F  F  F

  Truth table for | operator

           T  T  T
           T   F  T
           F  T  T

Example 1

           int a,b,c;
            a=100;
            b=400;
            c=a==b&&b> 300;
Now c=0; because condition is false
Note: In these example1 we are using && operator

Example 2

           int a,b,c;
           a=100
           b=400
            c=a== b|| b> 300;
Now c=1, observe conditions b> 300 satisfied so result is true

D) Bit wise operators

These operators are performed on bits

Example 1)

              a=25;
               b=13;
               c=a/b;
              Result is 29
Explanation
        25→11001
       13→01001
             11101
These values convert into binary format

F) Increment &amp; Decrement operators   

++,--,


These operators are urinary operator which is used to perform increase or Decrease by one


Increment (++)  operator

These operators used to increase the value by one.It divided into two types
post-increment and pre-increment
It is used to store particular values 

C Language Data Types

Integer:

  • A value without a decimal point is called an integer.
  • The range of integer is -3200768 to 3200767
  • The declaration integer of int a, b
  • 2 bytes of memory will be allocated that is 16 bytes
  • Integer format %d

Float:-

  • A value which contains a decimal point is called as float
  • 4 bytes of memory will be allocated 32 bites
  • Range is -3.4e+32 to 3.4e32
  • The declaration of float is d, e, f
  • Integer format %f (Decimal values)

Character:

  • In this, we can access  A-Z a-z 0-9 
  • 1 byte of memory will be allocated
  • Range is -128 to 127
  • Character format %c

Token keys:

   The token is nothing but giving a name for variables, functions, pointer, structures. ..etc
This one is also called as a naming specifications

Rules for naming specifications/Tokens

  •  It should start with alphabet   (refer example 1)
  •  You can give numbers one special character called (-) underscore
  •  No spaces are available   (refer example 2)
  • Case sensitive
Special Formats

  • Example 1

Int A  ✓
Int 1  ✘
Int 1A ✘

  • Example 2:

Int Sum ✓
Int Sum ✘

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