Logical operators operates on Boolean expressions or values. The result of that operation will be a Boolean result (True or False). Logical operators in C are:
| Operator | Meaning |
|---|---|
| && | AND - Result TRUE if Left side and right side operands are both TRUE |
| || | OR - Result TRUE if either Left side or right side operand is True or Both operands are True |
| ! | NOT - Invert the boolean expression or value. True will change to False and False to True |
Consider three variable a, b and c as below
a = 10;
b = 15;
c = 10;
The table below shows some expressions using above variables and the results.
| Expression | Meaning | Result |
|---|---|---|
| (a = c) && (a < b) | a = c is True; a < b is True - Both expressions are TRUE | TRUE |
| (a = c) || (a > b) | a = c is True; a > b is False - One expression is TRUE | TRUE |
| !( a > b) | a > b is False; Result is Inverse of False | TRUE |
| ( a > b) && (c < b) | a > b is False, c < b is True; Left side is FALSE | FALSE |
| ( a > b) && (c > b) | a > b is False, c > b is False; Both FALSE | FALSE |
| !( a = c) | a = c is True; Result is inverse of True | FALSE |
Nothing yet..be the first to share wisdom.