C++ Tutorial - Loops In C++ [For Loop, While Loop, Do While Loop]

In this C++ Tutorials we are going to talk about Loops In C++, we are going to learn different C++ Loops like For Loop, While Loop and Do While Loop. There may be a situation, when you need to execute a block of code several number of times, using loops you can do these kind of functionalities. A loop statement allows us to execute a statement or group of statements multiple times. There are different types of loops that you can use in c++, for loop, while loop, do while loop, also there are different control statements like break and continue in c++ loops, using control statements we can change the execution of loops from its normal sequence.

Youtube channel: Parwiz Forogh - https://www.youtube.com/watch?v=jNl5gJ_xSNQ

#c #c# #c++ #programming-c

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C++ Tutorial - Loops In C++ [For Loop, While Loop, Do While Loop]
Ida  Nader

Ida Nader

1599099600

How to Use If-Else Statements and Loops in R – Dataquest

When we’re programming in R (or any other language, for that matter), we often want to control when and how particular parts of our code are executed. We can do that using control structures like if-else statements, for loops, and while loops.

Control structures are blocks of code that determine how other sections of code are executed based on specified parameters. You can think of these as a bit like the instructions a parent might give a child before leaving the house:

“If I’m not home by 8pm, make yourself dinner.”

Control structures set a condition and tell R what to do when that condition is met or not met. And unlike some kids, R will always do what we tell it to! You can learn more about control structures in the R documentation if you would like.

In this tutorial, we assume you’re familiar with basic data structures, and arithmetic operations in R.

Not quite there yet? Check out our Introductory R Programming course that’s part of our Data Analyst in R path. It’s free to start learning, there are no prerequisites, and there’s nothing to install — you can start learning in your browser right now.

install.packages(“Dataquest”)

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(This tutorial is based on our intermediate R programming course, so check that out as well! It’s interactive and will allow you to write and run code right in your browser.)

Comparison Operators in R

In order to use control structures, we need to create statements that will turn out to be either TRUE or FALSE. In the kids example above, the statement “It’s 8pm. Are my parents home yet?” yields TRUE (“Yes”) or FALSE (“No”). In R, the most fundamental way to evaluate something as TRUE or FALSE is through comparison operators.

Below are six essential comparison operators for working with control structures in R:

  • == means equality. The statement x == a framed as a question means “Does the value of x equal the value of a?”
  • != means “not equal”. The statement x == b means “Does the value of x not equal the value of b?”
  • < means “less than”. The statement x < c means “Is the value of x less than the value of c?”
  • <= means “less than or equal”. The statement x <= d means “Is the value of x less or equal to the value of d?”
  • > means “greater than”. The statement x > e means “Is the value of x greater than the value of e?”
  • >= means “greater than or equal”. The statement x >= f means “Is the value of xgreater than or equal to the value of f?”

#data science tutorials #beginner #for loop #for loops #if #if else #learn r #r #r tutorial #rstats #tutorial #tutorials #while loop #while loops

Sival Alethea

Sival Alethea

1624305600

C++ Tutorial for Beginners - Full Course. DO NOT MISS!!!

This course will give you a full introduction into all of the core concepts in C++.
⭐️ Contents ⭐
⌨️ (0:00:00) Introduction
⌨️ (0:01:38) Windows Installation
⌨️ (0:04:54) Mac Installation
⌨️ (0:08:44) Setup & Hello World
⌨️ (0:12:29) Drawing a Shape
⌨️ (0:19:55) Variables
⌨️ (0:31:43) Data Types
⌨️ (0:39:15) Working With Strings
⌨️ (0:49:00) Working With Numbers
⌨️ (0:59:41) Getting User Input
⌨️ (1:05:32) Building a Calculator
⌨️ (1:09:28) Building a Mad Libs
⌨️ (1:13:45) Arrays
⌨️ (1:20:03) Functions
⌨️ (1:29:47) Return Statement
⌨️ (1:35:22) If Statements
⌨️ (1:47:15) If Statements (con’t)
⌨️ (1:55:58) Building a Better Calculator
⌨️ (2:02:20) Switch Statements
⌨️ (2:10:47) While Loops
⌨️ (2:18:53) Building a Guessing Game
⌨️ (2:29:18) For Loops
⌨️ (2:38:32) Exponent Function
⌨️ (2:45:21) 2d Arrays & Nested Loops
⌨️ (2:54:55) Comments
⌨️ (2:59:11) Pointers
⌨️ (3:13:26) Classes & Objects
⌨️ (3:25:40) Constructor Functions
⌨️ (3:34:41) Object Functions
⌨️ (3:41:43) Getters & Setters
⌨️ (3:54:04) Inheritance

Course developed by Mike Dane. Check out his YouTube channel for more great programming
📺 The video in this post was made by freeCodeCamp.org
The origin of the article: https://www.youtube.com/watch?v=vLnPwxZdW4Y&list=PLWKjhJtqVAblfum5WiQblKPwIbqYXkDoC&index=10
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Thanks for visiting and watching! Please don’t forget to leave a like, comment and share!

#c++ #c++ tutorial #c++ tutorial for beginners #c++ tutorial for beginners - full course #core concepts in c++.

C++ Tutorial - Loops In C++ [For Loop, While Loop, Do While Loop]

In this C++ Tutorials we are going to talk about Loops In C++, we are going to learn different C++ Loops like For Loop, While Loop and Do While Loop. There may be a situation, when you need to execute a block of code several number of times, using loops you can do these kind of functionalities. A loop statement allows us to execute a statement or group of statements multiple times. There are different types of loops that you can use in c++, for loop, while loop, do while loop, also there are different control statements like break and continue in c++ loops, using control statements we can change the execution of loops from its normal sequence.

Youtube channel: Parwiz Forogh - https://www.youtube.com/watch?v=jNl5gJ_xSNQ

#c #c# #c++ #programming-c

Ari  Bogisich

Ari Bogisich

1590587580

Loops in C++ | For, While, and Do While Loops in C++

In this Video We are going to see how to use Loops in C++. We will see How to use For, While, and Do While Loops in C++.
C++ is general purpose, compiled, object-oriented programming language and its concepts served as the basis for several other languages such as Java, Python, Ruby, Perl etc.

#c #c# #c++ #programming-c

Tyrique  Littel

Tyrique Littel

1597737600

Types of Loops in C and C++? - DZone IoT

Loops in a programming language is a piece of code that get executed repeatedly until the specified condition becomes false. A loop consists of two parts, a block of statements and a condition that control the loop.

Loops mainly consisted of three statements – initialization condition, test condition, update condition.

For example, if we want to print “Hello Codies” 5 times, we can do this in two ways. Writing the statement 5 times (#1) or use loops which save time and effort (#2).

Java

1

#1

2

3

#include <stdio.h> 

4

int main() 

5

{ 

6

     printf("Hello Codies\n"); 

7

     printf("Hello Codies\n");

8

     printf("Hello Codies\n");

9

     printf("Hello Codies\n");

10

     printf("Hello Codies\n");

11

12

    return 0; 

13

}

Java

1

#2

2

3

#include <stdio.h> 

4

5

int main() 

6

{ 

7

  int i; 

8

9

    // Writing a for loop 

10

    // to print Hello Codies 5 times 

11

12

    for (i = 1; i <= 5; i++) { 

13

        printf("Hello Codies\n"); 

14

    } 

15

    return 0; 

16

}

Output:

Java

1

Hello Codies

2

Hello Codies

3

Hello Codies

4

Hello Codies

5

Hello Codies

In this tutorial, you will learn-

  1. Types of Loops
  2. While Loop
  3. Do-While loop
  4. For loop
  5. Nested loop
  6. Break Statement
  7. Continue Statement

Types of Loops in C/C++

Loops are classified into two types depending upon the position control statements:

  • Entry controlled loop
  • Exit controlled loop

Entry controlled loop: A conditional statement is evaluated before executing the body of a loop. It is also called as a pre-checking or Counter controlled loops where the programmer already know how many times the loop get executed. Counter controlled loops are often called definite iteration because the number of repetitions is known before the loop begins execution.

Exit controlled loop: In this type of loops conditional statement are evaluated after executing the loop body once irrespective of whether the test condition is true or false. It is also called as a post-checking or Sentinel controlled Loop because the programmer don’t know exactly know how many times loop will be executed. Sentinel-controlled loop also known as indefinite repetition.

The control conditions must be specified properly otherwise the loop will execute infinite number of times (infinite loop). An infinite loop occurs when no termination condition is specified or specified conditions never meet.

programming language provides us with 3 types of loop and C++ has 4th extra loop:

  • while loop
  • do-while loop
  • for loop
  • Nested Loop (only in C++)

The syntax of these loops mainly differs in the placement of these three statements initialization condition, test condition, update condition.

While Loop in C/C++

The while loop specify that a program should repeat set of instruction inside the block till the condition remains true. While loop used in place where we don’t know number of iteration before and it depends on the update inside the block. While loop is Entry Controlled loop and widely used in C/C++.

Syntax of WHILE Loop:

Java

1

initialization condition;

2

while (test_ condition)

3

{

4

   // statements

5

6

  update_ condition;

7

}
Flow Chart of While loop.

In While loop, condition evaluated first if condition is TRUE than block of statements get executed and update condition then control again goes back at the beginning, and the condition is checked again if it is true, the same process is executed until the given condition becomes false. Once the test condition results FALSE control goes back to main program. While Loop is Entry-Controlled Loop.

Note: If Loop contains only one statement, then the curly braces are not compulsory. Though It is a good practice to include braces.

Following program illustrates a while loop:

Java

1

#include<stdio.h>

2

3

int main()

4

{

5

  int num=1;    //initializing the variable

6

7

     while(num<=5)            //while loop with test condition

8

    {

9

       printf("%d ",num);  

10

       num++;        //incrementing (update condition)

11

    }

12

    return 0;

13

}

Output:

Java

1

1 2 3 4 5

The above program prints series of numbers from 1 to 5 using a while loop.

Let’s see what happening in above program step by step.

Step 1: We have initialized variable ‘num = 1’.

Step 2: In while condition we are evaluating is ‘num’ value is less than or equal to 5, if ‘num’ becomes greater than 5 than this condition become False.

Step 3: For now ‘num = 1’, we enter the loop comparing 1 <= 5 which result true so the body of loop i.e. ‘num’ value 1 got printed.

Step 4: In this step ‘num’ value increased by 1 i.e now ‘num = 2’.

Now step 3 get repeated again with ‘num = 2’ and print the ‘num’ value 2, similarly 3,4,5. When ‘num’ got increase to 6 (num =6) while condition become FALSE & loop terminated than control goes back to main() function as there is nothing after loop do program exits with returning 0 indicating that everything went well.

#tutorial #iot #c++ #c #c++ beginner course #learn c++