Dot Net Perls VB. NET code implements the Fibonacci sequence. Each number is the sum of the previous two in this sequence. Fibonacci sequence.
Understanding For, Do, and while Loops Level: In our tutorial about if statements in Visual Basic 6 Understanding if statements and conditions in VB6 we describe how conditional statements work - these can be used in loops as while so if you have not read that tutorial please do so now.
Now continueing on with our original problem we described in our if statement tutoria how do we generate the Fibonacci series. Print x. This pseudo code will print out: 1, 1, 2, 3, 5, 8, 13, 21, But now how do we tell a Visual Basic program how to do this?
The answer lies in using loops. Loops provide the ability to repeatedly execute the same block of code, and to each time change values such that each run through the loop produces different results. Its construct is very simple: Do Code to execute Loop This, quite simply, executes the block of code, and when it reaches Loop, returns to the beginning of the Do Loop and executes the same block of code again.
The same block of code will be repeatedly executed until it is told to stop executing. Well, sorta. If you try to run this code, it will indeed generate the Fibonacci series; however, it will continually generate and print out the next number infinitely--or, in this case, until it reaches an overflow error.
This is known as the problem of the infinite do-loop, one that all programmers will experience, and some quite frequently. Exit Do So we clearly need some way to escape from the Do-Loop. You could, of course, simply End the program once you have calculated enough values, but what if you still need to perform tasks after you're done calculating?
The answer is to use the Exit Do statement.
Whenever your program reaches an Exit Do statement within a loop, it will exit the current loop. So, let's try a somewhat different approach to the Fibonacci problem. We decide that we want to calculate only eight values of the Fibonacci series, so we'll keep a counter and increment it each time throughout the loop.
Then, once the counter reaches eight, we'll exit the loop. This program successfully computes and prints out the first eight values of the Fibonacci series.
Its syntax is the following: Do Until Expression Code to execute Loop Expression can be any legal logical expression that we wish to evaluate to determine whether or not to exit the loop. Each time the program reaches Loop it will evaluate this expression.
If the expression is True, it will exit the loop for us, but otherwise it will continue looping. We must, however, still be sure to increment our counter every time through the loop, or else the Until expression will never be True, resulting in an infinite Do Loop. Its syntax is the following: Do While Expression Code to execute Loop Expression can be any legal logical expression that we wish to evaluate to determine whether or not to exit the loop.
Each time the program reaches Loop it will verify that this expression is True, and if it is False, it will exit the loop for us.
Thus, instead of exiting when an expression is True, it now exits only once this expression is false. This kind of loop allows you to specify a counter, to tell it to count from one number to another each time through the loop, and to exit once the counter has reached its upper limit.
Each time through the loop, the value of cnt was incremented by 1 until it reached 8, at which point the loop was executed. Simply invoke this statement anywhere within a For-Next loop and the current loop will be exited. Step By default, the variable used in the declaration of the For-Next loop is incremented by 1 each time through the loop; however, if you want to increment this value by a different amount each time through the loop, you can simply append Step Integer to the end of the For-Next loop declaration.
First Thing First: What Is Fibonacci Series? Fibonacci Series is a series of numbers where the first two Fibonacci numbers are 0 and 1, and each subsequent number is the sum of the previous two.
Its recurrence relation is given by F n = F n-1 + F n The first two numbers of fibonacci series are 0 and 1. There are two ways to write the fibonacci series program in java: Fibonacci Series without using recursion; Fibonacci Series using recursion; Fibonacci Series in Java without using recursion.
Let's see the fibonacci series program in java without using recursion. C++ program to print Fibonacci series.
To print Fibonacci series in C++ Programming, first print the starting two of the fabonacci series and make a while loop to start printing the next number of the Fibonacci series.
Use the three variable say a, b and c. Place b in c and c in a then place a+b in c to print the value of c to make Fibonacci series. All text is available under the terms of the GNU Free Documentation License (local GFDL copy).
Example programs sources additionally available under the terms of the. Calculate Fibonacci Series in Various Ways Using C#. In the second method 4 parameters are required since we need to continue changing the variable's position (in other words a -> b and b -> a + b). We also need to increment the counter in each recursion call and to compare it with the length and continue the loop until it exceeds the length parameter.
This blog provides source code in C Language for BCA, BTECH, MCA students. It provide C programs like Looping, Recursion, Arrays, Strings, Functions, File Handling and some advance data structures.