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Why have confusing syntax?
Message
De
29/10/2008 15:08:35
 
 
À
29/10/2008 14:43:46
Jay Johengen
Altamahaw-Ossipee, Caroline du Nord, États-Unis
Information générale
Forum:
Visual C++
Catégorie:
Codage, syntaxe et commandes
Divers
Thread ID:
01358131
Message ID:
01358147
Vues:
19
>I got the information below from a training/video site I subscribe to. Why would they make a language harder to understand than is needed? What is the reason for having "++" to add 1 and "+=" to add 10? Why not just i+1 or i+10? Doesn't make sense to me. And, this actually is C#, not C++, but I didn't see a C# forum. Unless they are the same?
>
>int i = 0;
>// convert from a string
>int i = int.Parse("1");
>// convert froma string and don’t throw exceptions
>if (int.TryParse("1", out i)) {}
>i++; // increment by one
>i--; // decrement by one
>i += 10; // add 10
>i -= 10; // subtract 10
>i *= 10; // multiply by 10
>i /= 10; // divide by 10
>
They are shorthand notations, and can come in handy. Take a loop:
for (int i = 0; i++; i < 10)
{
  Console.WriteLine("i = " + i);
}
That will write out the numbers from 0 to 9. If you change the centre part of the 'for' to "++i" instead, it will write out the numbers from 1 to 10.

In the first case, i is incremented after it is used, while in the 2nd case, it's incremented prior to use.

It's a little more messing around to do the same thing other ways.
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