Question

We all know that we can declare multiple variables in a for loop like the one below

for ( int var1 = 0, var2 = 0, var3 = 0, var4 = 0, var5 = 0, var6 = 0; var1 < 10;
      var1++, var2++, var3++, var4++, var5++, var6++ )
{
      int result = var1 + var2 + var3 + var4 + var5 + var6;
      Console.WriteLine( result );
}
Console.Read();

My Question is,

1. Can you let me know the total number of variables you can initialize in a for-loop?
2. Do multiple variables affect the performance of for-loop?
3. How many variable do you suggest we can use in a for-loop?

Thanks.

Answer 1

3. How many variable do you suggest we can use in a for-loop?

1

This is not about perfomance. Your only concern is readability, and that suffers a lot when you use a second variable. Never needed, never useful.