Programming Point

To execute a part of program or code several times, we can use do-while loop of C language.
The code given between the do and while block will be executed until condition is true.
In do while loop, statement is given before the condition, so statement or code will be executed at lease one time.
In other words, we can say it is executed 1 or more times.
It is better if you have to execute the code at least once.

The syntax of C language do-while loop is given below:

do
{
//code to be executed
}
while(condition);

Program to print table for the given number using do while loop

#include <stdio.h>
#include <conio.h>
void main()
{
int i=1,number=0;
clrscr();

printf("Enter a number: ");
scanf("%d",&number);

do
{
printf("%d \n",(number*i));
i++;
}
while(i<=10);

getch();
}
Output
Enter a number: 5
5
10
15
20
25
30
35
40
45
50

If you pass 1 as a expression in do while loop, it will run infinite number of times.

do
{
//statement
}
while(1);