Why do we use for loop and while loop?

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. In ‘while’ loop, the iteration statement can be written anywhere in the loop.

Why do we use for loop in C?

A for loop is a repetition control structure which allows us to write a loop that is executed a specific number of times. The loop enables us to perform n number of steps together in one line. In for loop, a loop variable is used to control the loop.

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

The condition may be any expression, and true is any nonzero value. The loop iterates while the condition is true. When the condition becomes false, the program control passes to the line immediately following the loop….Output.

While Loop	Do-While Loop
while(condition){ //statement }	do{ //statement }while(condition);

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

The difference between for loop and while loop is that in for loop the number of iterations to be done is already known and is used to obtain a certain result whereas in while loop the command runs until a certain condition is reached and the statement is proved to be false.

What is the difference between while for and do-while loop?

Here, statement(s) may be a single statement or a block of statements. The condition may be any expression, and true is any nonzero value. The loop iterates while the condition is true….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 the purpose of for statement how does it differ from while and do while statement?

While vs. Do While

While	Do While
In this loop, the condition is mentioned at the starting of the loop.	The loop condition is specified after the block is executed.
Statement(s) can be executed zero times if the condition is false.	Statement is executed at least once.

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

For loop vs. While loop. In the for loop, the initialization , checking of the condition, and the iteration statement are all written atop the loop. In the case of the while loop, only initialization and checking of the condition is carried out atop the loop.