Break and goto

Question

If we want to break and come out from loop we can either use keyword break or goto. One thing I noticed goto statement enable the execution to come out from loop and we can start the execution at a point where we want. But break statement come out from loop and continue the execution. It can't be used to start the execution at a point where we want.

In other words goto statement is flexible and break statement is not.

Is there any other differences?

Maha · Answer

Thanks

Vulpes · Answer

The break statement only works with loops. Loops for this purpose are : for foreach while do and switch. It doesn't work with the if statement here as it's not a loop and not embedded within a loop.

Maha · Answer

Thank you for your explanation. You developed a program in a website. I have some question about this program. If I use break statement program is not execuating. Please explain the reason. Problem is highlighted. using System; class Program { static void Main() { Console.Write(Enter number of seats : ); int numSeats = int.Parse(Console.ReadLine()); Console.Write(Enter number of passengers : ); int passengers = int.Parse(Console.ReadLine()); if (passengers > numSeats) { Console.WriteLine(The number of passengers cannot exceed the number of seats); return; } // create a Random object Random rand = new Random(); // create an array of seats int[] seats = new int[numSeats]; // all elements 0 by default // for each passenger assign a seat at random if it's not already occupied for (int i = 1; i { while (true) { int nextSeat = rand.Next(0 numSeats); // excludes end-point if (seats[nextSeat] == 0) // it's empty { seats[nextSeat] = i; break; } } } Console.WriteLine(The following seats are occupied by the passengers shown
); Console.WriteLine(Seat Passenger); Console.WriteLine(---- ---------
); for (int i = 0; i { if (seats[i] > 0) // it's occupied { Console.WriteLine({0 3} {1 3} i + 1 seats[i]); } } Console.WriteLine(); if (numSeats == passengers) { Console.WriteLine(There are no empty seats); break ; } Console.WriteLine(The following seats are empty
); Console.WriteLine(Seat); Console.WriteLine(----
); for (int i = 0; i { if (seats[i] == 0) // it's empty { Console.WriteLine({0 3} i + 1); } } Console.ReadKey(); } }

Vulpes · Answer

The 'break' keyword in (say) a for loop is equivalent to this: for(int i = 0; i { Console.WriteLine(i); if (i == 5) goto next; } next: // some more code So your description of what it does is accurate. As you say 'goto' is more flexible but this flexibility can get you into trouble leading to 'spaghetti' code. For this reason 'goto' tends to be frowned upon by professional developers though it does have some sensible uses. Check out my article on the subject: http://www.c-sharpcorner.com/UploadFile/b942f9/acceptable-uses-for-the-goto-statement-in-C-Sharp/