The C# Unary operators are also called increment and decrement operators. These unary operators are generally useful in the loop concepts.
The C# Increment Operators are of two types: pre-increment(++i) and post-increment(i++). And the Decrement Operators are also of two types: post-decrement(i–) and pre-decrement(–i).
Generally, the difference in C# post-increment (or post-decrement) and pre-increment (or pre-decrement) shall be identified while using looping concepts. When we use post-increment and post-decrement, first, the entire loop will execute. And then, the value will increment or decrement accordingly.
In the case of pre-increment and pre-decrement, first, the value will be incremented or decremented before the loop gets executed.
| Unary Operators | Operation | Example |
|---|---|---|
| ++ | Increment Operator | 15++ is 16, ++15 is 16 |
| — | Decrement Operator | 16– is 15, –16 is 15 |
C# Unary Operators Example
The following example helps you understand the C# Increment and Decrement Operators functionality.
using System;
class Unary_Operators
{
static void Main()
{
int x = 15;
int result;
Console.WriteLine("x is " + x);
result = x++;
Console.WriteLine("Post increment of x is " + x);
Console.WriteLine("x is " + x);
result = x--;
Console.WriteLine("Post decrement of x is " + x);
Console.WriteLine("x is " + x);
result = ++x;
Console.WriteLine("Pre increment of x is " + x);
Console.WriteLine("x is " + x);
result = --x;
Console.WriteLine("Pre decrement of x is " + x);
}
}
OUTPUT
ANALYSIS
x=15 -> x++ = 16 i.e., x++ will increment it’s value 15 by 1 which results in 16
x=16 -> x– = 15 i.e., x– will increment i’s value 16 by 1. And the C# results is 15.