C in Telugu Do while factorial part 20

Unlike for and while loops, which test the loop condition at the top of the loop, the do…while loop in C programming language checks its condition at the bottom of the loop.

A do…while loop is similar to a while loop, except that a do…while loop is guaranteed to execute at least one time.
Syntax:

The syntax of a do…while loop in C programming language is:

do
{
statement(s);

}while( condition );

Notice that the conditional expression appears at the end of the loop, so the statement(s) in the loop execute once before the condition is tested.

#include

void main ()
{
/* local variable definition */
int a = 10;

/* do loop execution */
do
{
printf(“value of a: %dn”, a);
a = a + 1;
}while( a < 20 ); getch(); }