Generic selectors
Exact matches only
Search in title
Search in content
Search in posts
Search in pages
Filter by Categories
nmims post
Objective Type Set
Online MCQ Assignment
Question Solution
Solved Question
Uncategorized

In do-while loop, condition is always tested after the the execution of the iteration and if condition fails, loop terminates. Therefore, do-while loop executes at least one iteration before termination if condition fails in first iteration! For example:

#include <stdio.h>
 
int main(void)
{
    int counter = 0;
 
    do {
        /* loop executes just once printing the value 0 */
 
        printf("counter is %dn", counter);
    } while(counter++ != 0);
 
    return 0;
}

In while loop, condition is checked before execution of each iteration and as condition fails, loop terminates. For example:

#include <stdio.h>
 
int main(void)
{		
    int counter = 0;
 
    /* loop terminates in the beginning of first iteration */
 
    while (counter++ != 0)
        printf("counter is %dn", counter);
 
    /* here counter val is printed as 1 */
 
    printf("counter is %dn", counter);
    return 0;      
}