Quick Answer: How Do You Write A While Loop For A For Loop?

What is Loop explain?

In computer science, a loop is a programming structure that repeats a sequence of instructions until a specific condition is met.

Programmers use loops to cycle through values, add sums of numbers, repeat functions, and many other things.

Two of the most common types of loops are the while loop and the for loop.

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What is the difference between a while loop and a for loop?

for loop provides a concise way of writing the loop structure. Unlike a while loop, a for statement consumes the initialization, condition and increment/decrement in one line thereby providing a shorter, easy to debug structure of looping.

How do you convert a for loop to a while loop in C++?

In order to convert for loop to while loop in C just move the loop control variable above the while and Increment/decrement expression inside the loop….//A simple for loop.for(int i=0; i<10; i++){//Print i.}//An equivalent while loop.int i=0;while(i<10){//Print i.More items...

What does a for loop do?

In computer science, a for-loop (or simply for loop) is a control flow statement for specifying iteration, which allows code to be executed repeatedly. … For-loops are typically used when the number of iterations is known before entering the loop.

Why you would use a for loop versus a while loop?

Generally, use for loops when you have a defined range of values to iterate over. Use while loops when you aren’t iterating, or don’t know when your exit condition will be true.

Is a while loop more efficient than a for loop?

Generally, the for loop can be more efficient than the while loop, but not always. The idea of the While loop is: While something is the case, do the following block of code. In this code, we have defined a variable name condition, and condition starts at a value of 1.

How does a for loop work?

After the body of the ‘for’ loop executes, the flow of control jumps back up to the increment statement. … If it is true, the loop executes and the process repeats itself (body of loop, then increment step, and then again condition). After the condition becomes false, the ‘for’ loop terminates.

How do you write a while loop?

How while loop works?The while loop evaluates the test expression inside the parenthesis () .If the test expression is true, statements inside the body of while loop are executed. … The process goes on until the test expression is evaluated to false.If the test expression is false, the loop terminates (ends).

How do you convert a for loop to a while loop in Python?

The variable you want to use in the for loop can be initialized earlier or in the loop variable initialization part of for loop. Now according to your question you want to change while loop into for loop….int i=0;while (i<5){printf(“God is One !!\n”);i++;}Result :-God is One !!More items...

What is Loop example?

A loop is used for executing a block of statements repeatedly until a particular condition is satisfied. For example, when you are displaying number from 1 to 100 you may want set the value of a variable to 1 and display it 100 times, increasing its value by 1 on each loop iteration.

Can you put a for loop in a while loop?

All for loops can be written as while loops, and vice-versa. Just use whichever loop seems more appropriate to the task at hand. In general, you should use a for loop when you know how many times the loop should run.

What are the types of loop?

It executes a block of statements number of times until the condition becomes false. Loops are of 2 types: entry-controlled and exit-controlled. ‘C’ programming provides us 1) while 2) do-while and 3) for loop. For and while loop is entry-controlled loops.

Where do we use while loop?

The while loop is used to repeat a section of code an unknown number of times until a specific condition is met. For example, say we want to know how many times a given number can be divided by 2 before it is less than or equal to 1.

What is the difference between for loop and while loop in Python?

The ‘for’ loop used only when we already knew the number of iterations. The ‘while’ loop used only when the number of iteration are not exactly known. If the condition is not put up in ‘for’ loop, then loop iterates infinite times. If the condition is not put up in ‘while’ loop, it provides compilation error.

How do you write a while loop in Python?

With the while loop we can execute a set of statements as long as a condition is true.Print i as long as i is less than 6: i = 1. while i < 6: ... Exit the loop when i is 3: i = 1. while i < 6: ... Continue to the next iteration if i is 3: i = 0. while i < 6: ... Print a message once the condition is false: i = 1. while i < 6: