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Mohammad Aadil
NA
15
2.1k
post-increment and post-decrement
Feb 21 2013 6:13 AM
hello seniors ,my name is Aadil and yet i am a student of b.tech
i have a problem with working style of operator that is post-increment and post-decrement operator and i want anyone to solve this
i know that what does these operator do .. but the problem is i dont know how does these work . how does complier do these thing for example i have a program
example of factorial :-
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
class myclass
{
public int factorial(int num)
{
if (num == 1)
{
return 1;
}
else
{
Console.WriteLine(num);
return factorial(num - 1) * num;
}
}
class hello
{
static void Main(string[] args)
{
myclass cls = new myclass();
Console.WriteLine(cls.factorial(4));
Console.ReadLine();
}
}
}
result is 24
*****************************
now with decrement operator
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
class myclass
{
public int factorial(int num)
{
if (num == 1)
{
return 1;
}
else
{
Console.WriteLine(num);
return factorial(num--) * num;
}
}
class hello
{
static void Main(string[] args)
{
myclass cls = new myclass();
Console.WriteLine(cls.factorial(4));
Console.ReadLine();
}
}
}
now the result is 44444....... in infinity it mean having bug n program it not executing the program is terminated itself so i want to know why these bug in this condition and when i use " pre-decrement" operator its working ? why so, so pls anyone explain me complete detail about these operator
thank you
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