What is do while in CPP with example?

C++ do-while Loop Example

  • #include
  • using namespace std;
  • int main() {
  • int i = 1;
  • do{
  • cout<
  • i++;
  • } while (i <= 10) ;

How do you start writing a while loop in C++?

C++ while loop

  1. Syntax. The syntax of a while loop in C++ is − while(condition) { statement(s); } Here, statement(s) may be a single statement or a block of statements.
  2. Flow Diagram. Here, key point of the while loop is that the loop might not ever run.
  3. Example. Live Demo.

Do While vs While loop C++?

A while loop in C programming repeatedly executes a target statement as long as a given condition is true. The syntax is like below….Output.

While Loop Do-While Loop
The while loop may run zero or more times Do-While may run more than one times but at least once.

What is do while in C programming with example?

There is given the simple program of c language do while loop where we are printing the table of 1.

  • #include
  • int main(){
  • int i=1;
  • do{
  • printf(“%d \n”,i);
  • i++;
  • }while(i<=10);
  • return 0;

What is do while in C language?

The expression in a do-while statement is evaluated after the body of the loop is executed. Therefore, the body of the loop is always executed at least once. The expression must have arithmetic or pointer type.

When we use do-while loop?

Using the do-while loop, we can repeat the execution of several parts of the statements. The do-while loop is mainly used in the case where we need to execute the loop at least once. The do-while loop is mostly used in menu-driven programs where the termination condition depends upon the end user.

What is while loop example?

A “While” Loop is used to repeat a specific block of code an unknown number of times, until a condition is met. For example, if we want to ask a user for a number between 1 and 10, we don’t know how many times the user may enter a larger number, so we keep asking “while the number is not between 1 and 10”.

How does do while loop work?

Overview. A do while loop is a control flow statement that executes a block of code at least once, and then repeatedly executes the block, or not, depending on a given boolean condition at the end of the block. Some languages may use a different naming convention for this type of loop.

What is the difference between while and do while?

The difference lies in the place where the condition is tested. The while loop tests the condition before executing any of the statements within the while loop whereas the do-while loop tests the condition after the statements have been executed within the loop.

What is do-while loop in C?

The C do while statement creates a structured loop that executes as long as a specified condition is true at the end of each pass through the loop. The syntax for a do while statement is: If the value of the expression is “false” (i.e., compares equal to zero) the loop is exited.

Do WHILE loop in C programming language?

How Does While Loop Works in C First, the while loop evaluates the condition of test expression inside the parenthesis () of a while loop. If the condition of a test expression is true, the block of statements inside the body of ‘while’ loop executed. This process will continue until the condition of the test expression of while loop is evaluated false.

Do while statement in C?

The C do while statement creates a structured loop that executes as long as a specified condition is true at the end of each pass through the loop. The syntax for a do while statement is: do loop_body_statement while (cond_exp); where: loop_body_statement is any valid C statement or block.

Do WHILE loop syntax?

Following is the syntax of a do…while loop − do { // Statements }while (Boolean_expression); Notice that the Boolean expression appears at the end of the loop, so the statements in the loop execute once before the Boolean is tested.

Do WHILE LOOP Visual Basic?

Generally, in Visual Basic the do-while loop is same as while loop but only the difference is while loop will execute the statements only when the defined condition returns true but the do-while loop will execute the statements at least once because first it will execute the block of statements and then it will checks the condition.