Operators are used to performing operations on variables and values.
In C language, There are the following types of operators:
- Arithmetic operators
- Assignment operators
- Comparison operators
- Logical operators
- Bitwise operators
Arithmetic Operators
Arithmetic Operators are used to doing mathematical calculations.
| Operator | Name | Meaning | Example |
| + | Addition | Adds 2 values | x+y |
| – | Subtraction | Substracts one value from another value | x-y |
| * | Multiplication | Multiplies two values | x*y |
| / | Division | Divides one value by another value | x/y |
| % | Modulus | Returns the remainder of the division | x%y |
| ++ | Increment | Increases the value of a variable by 1 | x++ |
| — | Decrement | Decreases the value of a variable by 1 | x– |
Assignment Operators
Assignment Operators are used to assigning the value to a variable.
| Operator | Example | Same as | Meaning |
| = | x=2 | x=2 | Assigning 2 to x variable |
| += | x += 2 | x = x+2 | Adding 2 to x variable’s value and assigning value to x |
| -= | x -= 2 | x = x-2 | Subtracting 2 to x variable’s value and assigning value to x |
| *= | x *= 2 | x = x*2 | Multiplying 2 to x variable’s value and assigning value to x |
| /= | x /= 2 | x = x/2 | Dividing 2 to x variable’s value and assigning value to x |
| %= | x %= 2 | x = x%2 | Assigning division remainder to variable x |
| &= | x &= 2 | x = x&2 | |
| |= | x |= 2 | x = x | 2 | |
| ^= | x ^= 2 | x = x^2 | |
| >>= | x >>= 2 | x = x >> 2 | |
| <<= | x <<= 2 | x = x << 2 |
Comparison Operators
Comparison operators are used to comparing two values and return true or false. Its the comparison is right then it will be true otherwise false.
| Operator | Name | Example |
| == | is equal to | a==b |
| != | is not equal to | a!=b |
| > | is greater than | a>b |
| < | is less than | a<b |
| >= | is greater than and equal to | a>=b |
| <= | is less than and equal to | a<=b |
Logical Operators
Logical operators are used to checking if it is true or false.
| Operator | Name | Meaning | Example |
| && | Logical and | It returns true if both statements are true otherwise returns false. | a > 2 && b < 3 |
| || | Logical or | It returns true if either 1st statement or 2nd statement is true, otherwise returns false. | a > 2 || b < 3 |
| ! | Logical not | It reverses the false to true and true to false. | !(a > 2 || b < 3) |
Size of Operator
The sizeof operator returns the size of a variable in bytes.
Example:
int myInt = 1;
printf("%d", sizeof(myInt));Bitwise Operators
| Operators | Name | Example |
| & | Bitwise AND | a & b |
| | | Bitwise OR | a | b |
| ^ | Bitwise XOR | a ^ b |
| ~ | Bitwise complement | ~ b |
| << | Shift left | a<<1 |
| >> | Shift right | a>>1 |
