C# Logical Operators - c# - c# tutorial - c# net
C# Logical Operators
What is logical operators in C# ?
- The C# Logical Operator also evaluates the values and returns true or false as output.
- These based on true-false the program performs dynamically at a run time.
- The logical operator is generally used with C# programming.
| S.no | Operators | Name | Example | Description |
|---|---|---|---|---|
| 1 | && | logical AND | (x>5) && (y<5) | It returns true when both conditions are true |
| 2 | || | logical OR | (x>=10) || (y>=10) | It returns true when at least one of the condition is true |
| 3 | ! | logical NOT | !((x>5)&&(y<5)) | It reverses the state of the operand "((x>5) && (y<5))" If "((x>5) && (y<5))" is true, logical NOT operator makes it false. |
Logical Operator
C# Sample Code - C# Examples:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace wikitechy_logical_operators
{
class Program
{
static void Main(string[] args)
{
bool a = true;
bool b = false;
if (a && b)
{
Console.WriteLine("WikiTechy says AND condition is true");
}
else
{
Console.WriteLine("WikiTechy says AND condition is false");
}
if (a || b)
{
Console.WriteLine("WikiTechy says OR condition is true");
}
else
{
Console.WriteLine("WikiTechy says OR condition is false");
}
if (!(a && b))
{
Console.WriteLine("WikiTechy says NOT condition is true\n\n");
}
else
{
Console.WriteLine("WikiTechy says NOT condition is false\n\n");
}
Console.ReadLine();
}
}
}
Code Explanation:
- bool a = true bool a stores true condition. Bool variables can be assigned values based on expressions. Many expressions evaluate to a Boolean value. Represented in one byte, the bool type represents truth.
- bool b = false bool b stores false condition. Bool variables can be assigned values based on expressions. Many expressions evaluate to a Boolean value. Represented in one byte, the bool type represents false.
- In this statement we are using the logical operator AND (a && b) for the condition of checking true && false, which will be not satisfied because a=true and b=false, so the output go to the else statement "false", which will be printed in the statement "WikiTechy says AND condition is false".
- In this statement we are using the logical operator OR (a || b) for the condition of checking true || false, which will be satisfied because a=true and b=false, so the output set as "true", which will be printed in the statement "WikiTechy says OR condition is true".
- In this statement we are using the logical operator NOT (! (a && b)) for the condition of checking (not (true || false)), which will be satisfied because a=true and b=false, so the output set as "true", which will be printed in the statement "WikiTechy says NOT condition is true".
Sample C# examples - Output :
- Here in this output, we have shown the "WikiTechy says AND condition is false", which specifies to else statement. Because the AND (a && b) logical operator condition is not satisfied.
- Here in this output, we have shown the "WikiTechy says OR condition is true", which specifies to OR (a || b) logical operator condition is not satisfied.
- In this output, we have shown the "WikiTechy says NOT condition is true", which specifies to NOT (! (a && b) logical operator condition is not satisfied.