Getting an array length in C# is a trivial task. All we need to so is call the Length property of the Array Class:

int[] arr = new int[17];
int arrLength = arr.Length;

Getting an array length in C++ might be less trivial:

int arr[17];
int arrSize = sizeof(arr) / sizeof(int);

Notice that sizeof(arr) returns the array size in bytes, not its length…

Sometimes we need to know the width of a given string in pixels, do you know how to compute it? Before writing some long code, please notice that the .NET framework class library provides such a method. When Googling about this issue, we find the Graphics.MeasureString Method, here is how to use it:

Graphics graphics = this.CreateGraphics();
SizeF textSize = graphics.MeasureString("How long am I?", this.Font);

Nice isn’t it? Well, there is one little problem here, how is the Graphics object created? The written code is a Windows Forms code, so the this is the Form itself. You can’t create the Graphics object by simply allocating it because…