How To Use Do/While Loops in C++

 How To Use Do/While Loops in C++

In this blog I will teach users how to use Do/While Loops in C++,.


A While Loop is a controlled flow which allows users to execute lines of codes repeatedly according to a boolean condition, For example in the brackets of a while loop the condition could be loop while num1 is equals to 1 and the lines of code within the while brackets will continue to loop until the condition is false.



while (boolean condition) {
  Lines of code to be repeated
                                }


The example below will show a line of code with a while loop with a condition containing a variable that will increment after every loop until it returns false and ends the loop.

EXAMPLE: 

int num1 = 1;

while(num1 <= 5)
{
printf("%d\n", num1);

}

OUTPUT:







A Do-While Loop is simialar to a while loop but the only difference is that the loop within the "do" curly brace will run atleast once before verifying if the condition that determines if the loop will run again is true or false.




do{
    Blocks of code to be executed atleast once
}while (boolean condition);
 



EXAMPLE:

int num = 1;

do{
printf("%d\n", num1); 

}while(num <= 5);


OUTPUT:












Comments

Post a Comment

Popular posts from this blog

How to Open a C++ Project on VS22 and get started

Image
  How to Open a C++ Project on VS2022 and Get Started In this blog I will be going through a step by step process on how to open a c++ project on Visual Studio 2022 and print "Hello World". Before you begin you would need  Visual Studio 2022  , Once downloaded and set up you are now ready to begin! Step 1: Select the "Create a new project" box which is located at the right side of the screen at the bottom of the "Get Started" drop down. Step 2: At the top of the screen there should be a search bar, Click the search bar and type "C++" and then you will be given a list of options, Select "Empty Project" and click "Next" at the bottom right of the screen. Step 3: Create a Project Name ( I came up with "CPlusTutorial" but you are able to use any name you wish).  After inputing a name select which location on your PC you will like to store your project and then select "Create" at the bottom right corner of the s
Read more

How To Write to File on C++

Image
 How To Read and Write Files in C++ This C++ feature allows users to read and write from files, this feature is available in many coding languages. The file contents are added using an input device such as a keyboard, the user's input is then added into a file via the program. When a user wants the code to read from a file, the file goes through the program again and outputs the file contents. This post will teach users how to create a file, read from a file and append a file specifically text files.  Credits:  https://linuxhint.com/cplusplus_read_write/ There are individual code parameters and declerations to open files, close files, read from files, write files and append files, this post will go over the ways to execute them. These are called File Access Modes, these are arguments that have set parameters for if the file exist or doesnt exist. Credits:  https://www.programiz.com/cpp-programming/library-function/cstdio/fopen Write File FILE *  file ; //Variable decleration for fi
Read more

How To Use Arrays in C++

Image
 How To Use Arrays in C++ This Blog will go over One-Dimensional Arrays and Two-Dimensional Arrays, Arrays are a collection of elements that are the same data type that are stored in a special variable, each one of the elements that are a part of the collection can be individually referenced or used with the use of an index identifier.  The user is the one to specify the size and contents of an array.  Arrays are almost like lists, for example an array can be used to store a list of names of people attending a course or the amount of rainfall in a week. Below is a visual example of an array: 2D Arrays are basically arrays within arrays, the data is structured in matrices or rows and columns, but the values are still stored linearly within the memory. 2D Arrays are useful for when you want to compartmentalize your data. When specifying array values, it is important to note that arrays start at 0 so if you were to give your array a size of five and assign values to each array index you w
Read more