The document discusses a do-while loop code sample written in C programming language. The code prompts the user to enter a choice between 1, 2, or 3 and will continue looping until the user enters 2. It uses printf and getche functions to output text and get character input from the user. The code is meant to demonstrate a basic do-while loop structure in C.

1. #2
1. Do
do while
do while
while do while
1
do while

2. 2. #include<stdio.h>
#include<conio.h>
void main(void)
{
char choice;
clrscr();
do {
printf("nn******* Question *******n");
printf("*************************nn");

3. printf("1. Pornapan");
printf("2. Kerdsomnukn");
printf("3. No.21 M.6/4n");
printf("Enter your choice(1,2,3): ");
choice=getche();
}while(choice != '2');
}
3.
choice

4. 4.