Arithematic Operators
+, - , *, / and the modulus operator %.
+ and – have the same precedence and associate left to right.
3 – 5 + 7 = ( 3 – 5 ) + 7 3 – ( 5 + 7 )
3 + 7 – 5 + 2 = ( ( 3 + 7 ) – 5 ) + 2
*, /, % have the same precedence and associate left to right.
The +, - group has lower precedence than the *, / % group.
3 – 5 * 7 / 8 + 6 / 2
3 – 35 / 8 + 6 / 2
3 – 4.375 + 6 / 2
3 – 4.375 + 3
-1.375 + 3
1.625
The following table shows all the arithmetic operators supported by the C language. Assume variable A holds 10 and variable B holds 20 then
| Operator | Description | Example |
|---|---|---|
| + | Adds two operands. | A + B = 30 |
| – | Subtracts second operand from the first. | A − B = -10 |
| * | Multiplies both operands. | A * B = 200 |
| / | Divides numerator by de-numerator. | B / A = 2 |
| % | Modulus Operator and remainder of after an integer division. | B % A = 0 |
| ++ | Increment operator increases the integer value by one. | A++ = 11 |
| — | Decrement operator decreases the integer value by one. | A– = 9 |
Logical Operators
Following table shows all the logical operators supported by C language. Assume variable A holds 1 and variable B holds 0, then −
| Operator | Description | Example |
|---|---|---|
| && | Called Logical AND operator. If both the operands are non-zero, then the condition becomes true. | (A && B) is false. |
| || | Called Logical OR Operator. If any of the two operands is non-zero, then the condition becomes true. | (A || B) is true. |
| ! | Called Logical NOT Operator. It is used to reverse the logical state of its operand. If a condition is true, then Logical NOT operator will make it false. | !(A && B) is true. |