In C programming language there are many operators to do mathematical or logical jobs .They are
Arithmetic Operators , Relational Operators , Logical Operators , Bitwise Operators , Assignment Operators , Misc Operator.
Arithmetic Operators
Suppose we have two variables A & B
Operator | Description | Example |
+ | Adds two operands | A + B will give 30 |
- | Subtracts second operand from the first | A - B will give -10 |
* | Multiply both operands | A * B will give 200 |
/ | Divide numerator by de-numerator | B / A will give 2 |
% | Modulus Operator and remainder of after an integer division | B % A will give 0 |
++ | Increment operator increases integer value by one | A++ will give 11 |
-- | Decrement operator decreases integer value by one | A-- will give 9 |
Relational Operators
Operator | Description | Example |
== | Checks if the value of two operands is equal or not, if yes then condition becomes true. | (A == B) is not true. |
!= | Checks if the value of two operands is equal or not, if values are not equal then condition becomes true. | (A != B) is true. |
> | Checks if the value of left operand is greater than the value of right operand, if yes then condition becomes true. | (A > B) is not true. |
< | Checks if the value of left operand is less than the value of right operand, if yes then condition becomes true. | (A < B) is true. |
>= | Checks if the value of left operand is greater than or equal to the value of right operand, if yes then condition becomes true. | (A >= B) is not true. |
<= | Checks if the value of left operand is less than or equal to the value of right operand, if yes then condition becomes true. | (A <= B) is true. |
Logical Operators
Operator | Description | Example |
&& | Called Logical AND operator. If both the operands are non zero then condition becomes true. | (A && B) is false. |
|| | Called Logical OR Operator. If any of the two operands is non zero then condition becomes true. | (A || B) is true. |
! | Called Logical NOT Operator. Use to reverses the logical state of its operand. If a condition is true then Logical NOT operator will make false. | !(A && B) is true. |
Bitwise Operators
p | q | p & q | p | q | p ^ q |
0 | 0 | 0 | 0 | 0 |
0 | 1 | 0 | 1 | 1 |
1 | 1 | 1 | 1 | 0 |
1 | 0 | 0 | 1 | 1 |
Assume if A = 60; and B = 13; Now in binary format they will be as follows:
A = 0011 1100
B = 0000 1101
-----------------
A&B = 0000 1100
A|B = 0011 1101
A^B = 0011 0001
~A = 1100 0011
Operator | Description | Example |
& | Binary AND Operator copies a bit to the result if it exists in both operands. | (A & B) will give 12 which is 0000 1100 |
| | Binary OR Operator copies a bit if it exists in either operand. | (A | B) will give 61 which is 0011 1101 |
^ | Binary XOR Operator copies the bit if it is set in one operand but not both. | (A ^ B) will give 49 which is 0011 0001 |
~ | Binary Ones Complement Operator is unary and has the effect of 'flipping' bits. | (~A ) will give -61 which is 1100 0011 in 2's complement form. |
<< | Binary Left Shift Operator. The left operands value is moved left by the number of bits specified by the right operand. | A << 2 will give 240 which is 1111 0000 |
>> | Binary Right Shift Operator. The left operands value is moved right by the number of bits specified by the right operand. | A >> 2 will give 15 which is 0000 1111 |
Assignment Operators
Operator | Description | Example |
= | Simple assignment operator, Assigns values from right side operands to left side operand | C = A + B will assign value of A + B into C |
+= | Add AND assignment operator, It adds right operand to the left operand and assign the result to left operand | C += A is equivalent to C = C + A |
-= | Subtract AND assignment operator, It subtracts right operand from the left operand and assign the result to left operand | C -= A is equivalent to C = C - A |
*= | Multiply AND assignment operator, It multiplies right operand with the left operand and assign the result to left operand | C *= A is equivalent to C = C * A |
/= | Divide AND assignment operator, It divides left operand with the right operand and assign the result to left operand | C /= A is equivalent to C = C / A |
%= | Modulus AND assignment operator, It takes modulus using two operands and assign the result to left operand | C %= A is equivalent to C = C % A |
<<= | Left shift AND assignment operator | C <<= 2 is same as C = C << 2 |
>>= | Right shift AND assignment operator | C >>= 2 is same as C = C >> 2 |
&= | Bitwise AND assignment operator | C &= 2 is same as C = C & 2 |
^= | bitwise exclusive OR and assignment operator | C ^= 2 is same as C = C ^ 2 |
|= | bitwise inclusive OR and assignment operator | C |= 2 is same as C = C | 2 |
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