An operator is a symbol that tells the computer to perform certain mathematical or logical manipulations.
Operators usually form a part of the mathematical or logical expressions.
Arithmetic Operators
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| Arithmetic operators are used to perform common mathematical operations (such as - Addition, Substraction, Multiplication, Division).
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| Operators |
Name |
Description |
Example |
| + |
Addition |
Add together two values |
x + y |
| - |
Substraction |
Subtracts one values from another |
x - y |
| * |
Multiplication |
Multiples two values |
x * y |
| / |
Division |
Divides one value by another |
x / y |
| % |
Modulus |
Returns the division remainder |
x % y |
| ++ |
Increment |
Increases the value of a variable by 1 |
++x |
| -- |
Decrement |
Decreases the value of a variable by 1 |
--x |
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| Integer Arithmetic – |
If both the operands in a single arithmetic expression such as a + b are integers, the expression is called an integer expression.
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| Real Arithmetic – |
An arithmetic operation involving only real operands is called real arithmetic.
A real operand may assume values either in decimal or exponential notation.
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| Mixed-mode Arithmetic – |
If one of the operands is real and the other is integer, the expression is called a mixed mode arithmetic expression.
If either operand is of the real type, then only the real operation is performed and the result is always a real number.
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Relational Operators
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| Relational Operators are the type of Operators used in a programming language that helps us compare any two entities, like two entities, like two integers, characters, and many more.
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They always give the result in 1 and 0 where:
1 means that the comparison is True
0 means that the comparison is False
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| Operators |
Name |
Description |
| == |
Equality Operator |
This relational operator tests the equality relation between two operands and return 1 if both are equal otherwise return 0. |
| != |
Inequality Operators |
This operator tests the inequality between two operands and returns 1 if both are not equal otherwise return 0.
This is the opposite of equality operator
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| < |
Less Than |
This operator tests that if one value strictly less than the other or not and returns 1 if the first value is less then second otherwise return 0. |
| > |
Greater than |
This operator tests than if one value is strictly greater than the other one or not and return 1 if the first value is strictly greater otherwise return 0. |
| <= |
Less than or Equal to |
This operator tests that if one value is less than or equal to the other one or not and return 1 if the first value is less than or equal to second value otherwise return 0. |
| >= |
Greater than or Equal to |
This operator tests that if one value is greater than or equal to the other one or not and returns 1 if the first value is greater than equal to second value otherwise return false. |
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Logical Operators
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| Logical operators are specially used when we are going to combine two or more conditional and relational expressions. |
| Operators |
Name |
Description |
| && |
Logical AND |
Returns 1 if both statements are true |
| || |
Logical OR |
Returns 1 if one of the statements is true
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| ! |
Logical NOT |
Reverse the result, returns 0 if the result is 1 |
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Increment and Decrement Operators
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C allow two useful operators. These are:
| Operators |
Name |
Description |
| ++ |
Increment Operator |
adds 1 to operands |
| -- |
Decrement Operator |
subtract 1 from operands |
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| Both are unary operators |
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Conditional Operators
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| A ternary operator pair “ ? : ” is available in C to construct condition expressions of the form. |
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Where:
| exp1, exp2, and exp3 |
are expressions when using conditional operator
if exp1 is true then exp2 is executed
else if exp1 is false than exp3 is executed.
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Bitwise Operators
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- Bitwise operators are used for manipulation of data at bit level.
- These operators are used for testing the bits, or shifting them right or left.
- Bitwise Operators may not be applied to float or double.
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| Operators |
Name |
| & |
bitwise AND |
| | |
bitwise OR |
| ^ |
bitwise exclusive OR (XOR) |
| << |
Shift Left |
| >> |
Shift Right |
| ~ |
One,s complement Operator
(unary operator) |
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Special Operators
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C special operators are:-
- Comma operator
- Size of operator
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Comma Operator
- The comma Operator can be used to link the related expressions are together.
- Expressions are evaluated left to right.
- The value of right-most expression is the value of the combined expression.
Sizeof Operator
- The sizeof is a compiler time operator.
- When sizeOf used with an operand, it returns the number of bytes the operand occupies. The operand may be a variable, a constant, or a datatype qualifier.
- The sizeof operator is normally used to determine the lengths of array and structures.
- It is also used to allocate memory space dynamically to variables during execution of a program.
Example:
m = sizeof(sum);
n = sizeof(long int);
k = sizeof(235L);
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