Check out 15 C# Questions – For, While Loops and If Else Statements. Learn C programming, Data Structures tutorials, exercises, examples, programs, hacks, tips and tricks online. Browse other questions tagged c while-loop scanf or ask your own question. He loves to learn new techs and write programming articles especially for beginners. So, even if the condition is false for the first time the do-while loop will execute once. These task in C programming is handled by looping statements. The syntax of the while loop is: while (condition) { // body of the loop } Here, A while loop evaluates the condition; If the condition evaluates to true, the code inside the while loop is executed. For Loops! Write a C program to print all Armstrong numbers between 1 to n. 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C program to print numbers from 1 to N using while loop. Print pattern using only one loop | Set 1 (Using setw), Print the pattern by using one loop | Set 2 (Using Continue Statement). In short Pankaj is Web developer, Blogger, Learner, Tech and Music lover. If Condition yields true, the flow goes into the Body. A while loop in C programming repeatedly executes a target statement as long as a given condition is true. Write a program in C++ to find the sum of first 10 natural numbers. The statements inside the body of the loop get executed. Nested For Loops. Syntax of while loop in C programming language is as follows: while (condition) { statements; } It is an entry-controlled loop. Do While Loop: This loop is similar to the while loop but here first the loop statements are executed and after that, the condition is checked. The loop iterates while the condition is true. Go to the editor. More While Loops: Balloon Hopper. Ans. Give the general syntax of a do-while loop. Read more about C While Loop. When does the code block following while… The do-while loop . So you need to know how to … Loops execute a series of statements until a condition is met or satisfied. 2. There is an exercise you can perform on the next page which will help you understand these two loops nicely. C. 0 D. 1 Note: This quiz question probably generates more email to the webmaster than any other single item on the site. In inner do- while loop while condition is ! as a Software Design Engineer and manages Codeforwin. A three digit number is called Armstrong number if sum of cube of its digit is equal to number itself. C++ Questions Answers about C++ loops part II. acknowledge that you have read and understood our, GATE CS Original Papers and Official Keys, ISRO CS Original Papers and Official Keys, ISRO CS Syllabus for Scientist/Engineer Exam, Comparison of Exception Handling in C++ and Java, Decision Making in C / C++ (if , if..else, Nested if, if-else-if ), Execute both if and else statements in C/C++ simultaneously, How to compile 32-bit program on 64-bit gcc in C and C++, Interesting facts about switch statement in C. Difference between pointer and array in C? The do-while loop is similar to while loop. The while loop is mostly used in the case where the number of iterations is not known in advance. Number pattern programs - Write a C program to print the given number patterns, Basic programming exercises and solutions in C, Bitwise operator programming exercises and solutions in C, If else programming exercises and solutions in C, Switch programming exercises and solutions in C, Conditional operator exercises and solutions in C, Array programming exercises and solutions in C, String programming exercises and solutions in C, Function and recursion programming exercises and solutions in C, Pointer programming exercises and solutions in C. close, link Writing clean code. -2 = 0. These statements are repeated with same or different parameters for a number of times. The questions in this quiz and worksheet will gauge how much you know about the do-while loop in C. You should be able to read code and understand its output to succeed on the short quiz. If Condition yields false, the flow goes outside the loop. C Do-While Loop. The condition of the loop is tested before the body of the loop is executed, hence it is called an entry-controlled loop.. After GeeksQuiz is printed once, the control reaches the while statement to check for the condition. Looping statement defines a set of repetitive statements. Please use ide.geeksforgeeks.org, Write a C program to swap first and last digits of a number, Write a C program to calculate sum of digits of a number, Write a C program to calculate product of digits of a number, Write a C program to enter a number and print its reverse. Write a C program to print all Prime numbers between 1 to n. Write a C program to find sum of all prime numbers between 1 to n, Write a C program to find all prime factors of a number. Loops are used in programming to execute a block of code repeatedly until a specified condition is met. Sample Output: … In while loop, a condition is evaluated before processing a body of the loop. These questions will help you to test and improve your C# programming skills. Easily attend exams after reading these Multiple Choice Questions. Project: Build-a-House. Software developer, Blogger, Learner, Music Lover... Write a C program to print all natural numbers from 1 to n. Write a C program to print all natural numbers in reverse (from n to 1). Question 10. Expected Output: 1 2 3 … 3. If you don't understand why, think about it this way: what condition has to be true for the loop to stop running? I always look forward to hear from you. The condition may be any expression, and true is any nonzero value. var prevPostLink ="/2015/06/switch-case-programming-exercise.html"; What happens if loop till Maximum of Signed and Unsigned in C/C++? Flow Diagram. the number of times the loop body is needed to be executed is known to us.The while loop in C/C++ is used in situations where we do not know the exact number of iterations of loop … The while loop in C/C++ is used in situations where we do not know the exact number of iterations of loop beforehand. while (boolean-expression) statement; where while is a reserved word, boolean-expression is an expression that evaluates to true or false, and statement is a C++ statement, or a group of statements enclosed by curly braces (a compound statement). There are 3 loops in C++, for, while, do-while. Follow on: Facebook | Twitter | Google | Website or View all posts by Pankaj, C program to print strong numbers between 1 to n, C program to find prime factors of a number. Write a C program to check whether a number is palindrome or not. 2. Which will be faster while(1) or while(2)? The numbers should be added and the sum displayed. … Go to the editor. When the condition becomes false, program control passes to the line immediately following the loop. How will you print numbers from 1 to 100 without using loop? Don't stop learning now. Such as - read all files of a directory, send mail to all employees one after another etc. In outer do-while loop while condition is 0. This is the currently selected item. Difference between while(1) and while(0) in C language, Difference between for and do-while loop in C, C++, Java, Difference between for and while loop in C, C++, Java, Hello World Program : First program while learning Programming, Reversed Range-based for loop in C++ with Examples. Looping statement is also known as iterative or repetitive statement. Write a C program to print all natural numbers in reverse (from n to 1). If so, the loop should repeat; otherwise it should terminate. while loop in C. While loop is also known as a pre-tested loop. So program control will also come out of the outer do-while loop. C program to print all lowercase alphabets using while loop. In this exercise we will practice lots of looping problems to get a strong grip on loop. code. Since, the condition is false, the loop gets terminated. Data Structures and Algorithms – Self Paced Course, We use cookies to ensure you have the best browsing experience on our website. edit A New Kind of Loop. while loop is an entry controlled looping statement used to repeat set of statements when number of iterations are not known prior to its execution. These are MCQ type Aptitude Questions and Answers with Explanation. Featured on Meta New Feature: Table Support. This section focuses on the "Structure And Loops" of the C programming. Go through C Theory Notes on Loops before studying questions. Learn C Programming MCQ Questions and Answers on Loops like While Loop, For Loop and Do While Loop. Show the answer. Star pattern programs - Write a C program to print the given star patterns. Write a C program to find sum of first and last digit of a number. In this tutorial, you will learn to create while and do...while loop in C … Write a C program to find sum of all natural numbers between 1 to n. Write a C program to find sum of all even numbers between 1 to n, Write a C program to find sum of all odd numbers between 1 to n, Write a C program to print multiplication table of any number, Write a C program to count number of digits in a number, Write a C program to find first and last digit of a number. How do you create infinite loops using do-while loop structure? Linked. This process continues until the condition is false. 4. Write a C program to check whether a number is Armstrong number or not. The only difference is that in do-while loop, the test condition is evaluated at the end of loop. brightness_4 The condition is evaluated again. Go through C Theory Notes on Loops before studying questions. This is most recommended C programming exercise for beginners.eval(ez_write_tag([[970,250],'codeforwin_org-medrectangle-4','ezslot_10',114,'0','0'])); Always feel free to drop your queries, suggestions, hugs or bugs down below in the comments section. In C zero means false. Easily attend exams after reading these Multiple Choice Questions. Here, key point of the while loop is that the loop might not ever run. C++ while Loop. Write a C program to print all even numbers between 1 to 100. while loop is a most basic loop in C++. The loop execution is terminated on the basis of the test condition. So, the body of the loop gets executed atleast one time even if the condition is false. The loop iterates while the condition is true. So program control will also come out of the outer do-while loop. These Multiple Choice Questions (mcq) should be practiced to improve the C programming skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations. The for loop While Loop in C. A while loop is the most straightforward looping structure. Challenge: Lined Paper. var nextPostLink ="/2015/07/star-patterns-program-in-c.html"; Pankaj Prakash is the founder, editor and blogger at Codeforwin. Loops in C/C++ come into use when we need to repeatedly execute a block of statements.. During the study of ‘for’ loop in C or C++, we have seen that the number of iterations is known beforehand, i.e. By using our site, you In programming, there exists situations when you need to repeat single or a group of statements till some condition is met. Write a program in C to multiply two numbers without actually using the * operator but have to use both the while and do-while loops. In the previous tutorial we learned for loop.In this guide we will learn while loop in C. Difference between while and do-while loop in C, C++, Java. It can be viewed as a repeating if statement. Write a C program to print "GfG" repeatedly without using loop, recursion and any control structure? C Programming Multiple Choice Question - Structure And Loops. the number of times the loop body is needed to be executed is known to us. Loops and conditional constructs are an integral part of any programming language. C Loops Exercises for Practice. The syntax of the do while loop is: do { statement; }while (condition); Infinite loop using do-while loop: do { System.out.println(“Infinite”); }while(true); Give the output and determine how many times the loop will execute: Syntax. Write a C program to check whether a number is Prime number or not. The Overflow Blog Ciao Winter Bash 2020! Challenge: A Loopy Ruler. C programming Looping Aptitude Questions and Answers – Looping (while, for, do while) Aptitude Questions and Answers in C programming for beginners and experienced. An Uncommon representation of array elements, Dynamic Memory Allocation in C using malloc(), calloc(), free() and realloc(), Left Shift and Right Shift Operators in C/C++, Initialize a vector in C++ (5 different ways), Map in C++ Standard Template Library (STL), Write Interview Writing code in comment? Unable to execute a do-while loop completely. Loops in C/C++ come into use when we need to repeatedly execute a block of statements. In outer do-while loop while condition is 0. Program using the while loop A three digit number is called Armstrong number if sum of cube of its digit is equal to number itself. Open source has a funding problem. Dry-Running Example 1: The program will execute in the following manner. Hence program control will come out of the inner do-while loop. The basic format of while loop statement is: Write a C program to print all odd number between 1 to 100. Write a C program to print all alphabets from a to z. Swag is coming back! The loop should ask the user whether he or she wishes to perform the operation again. In C zero means false. Solve question related to C - Loop and loop. He works at Vasudhaika Software Sols. Review: Looping. Learn C Programming MCQ Questions and Answers on Loops like While Loop, For Loop and Do While Loop. Write a C program to print all ASCII character with their values, Write a C program to find power of a number using for loop, Write a C program to find all factors of a number, Write a C program to calculate factorial of a number, Write a C program to find HCF (GCD) of two numbers, Write a C program to find LCM of two numbers. Print 1 to 100 in C++, without loop and recursion, Print substring of a given string without using any string function and loop in C. How to concatenate two integer arrays without using loop in C ? C++ for loops C++ for loops C++ for loops . … The do-while loop has ended and the flow has gone outside. Challenge: A Loopy Landscape. 1. (2) What will be output of following c code? Test your knowledge of C++ language Loop Write a program in C to display the first 10 natural numbers. Loops execute a series of statements until a condition is met or satisfied. 3. Syntax: do { Statement(s); }while… In do-while loop, the test condition is evaluated at the end. #include int main() If a macro needs to be expanded in multiple lines, it is the best practice to write those lines within do{ }while(0) to avoid macro side effects. Example 1: This program will try to print “Hello World” 5 times. A loop is used for executing a block of statements repeatedly until a given condition returns false. while loop has one control condition, and executes as long the condition is true. Write a C program to find frequency of each digit in a given integer. Yes, the answer really is 10. Next lesson. Practice: Using while loops. Write a C program to enter a number and print it in words. Experience. The syntax of a while loop in C programming language is − while(condition) { statement(s); } Here, statement(s) may be a single statement or a block of statements. That is again false. Write a do-while loop that asks the user to enter two numbers. Hence program control will come out of the inner do-while loop. In general, a while loop allows a part of the code to be executed multiple times depending upon a given boolean condition. Attention reader! - using while loop. This is an example of while loop in C programming language - In this C program, we are going to print all lowercase alphabets from ‘a’ to ‘z’ using while loop. Basic C programming, Relational operators, Logical operators, If else, For loop. 4.1. Interview question and ans on Loops in C++ - loops are used to execute programming statements n number of times. During the study of ‘for’ loop in C or C++, we have seen that the number of iterations is known beforehand, i.e. That is again false. generate link and share the link here. Get hold of all the important DSA concepts with the DSA Self Paced Course at a student-friendly price and become industry ready. Link here loop body is needed to be executed Multiple times depending while loop questions in c given. The basic format of while loop than any other single item on the next page which will you. Another etc 2 ) What will be faster while ( 2 ) is! … C++ while loop through C Theory Notes on loops like while loop a. You to test and improve your C # programming skills the C programming false. Situations where we do not know the exact number of iterations of beforehand. The program will try to print `` GfG '' repeatedly without using loop a. Browsing experience on our website, program control will also come out of the loop it can be as... Allows a part of any programming language in programming to execute a series of statements until a integer. Studying Questions tagged C while-loop scanf or ask your own question: using loop! If statement and the sum of cube of its digit is equal to number itself in! First and last digit of a number is palindrome or not Learner, and... Webmaster than any other single item on the `` structure and loops of! Is an exercise you can perform on the site the DSA Self Paced Course at a student-friendly price become. Exercises, examples, programs, hacks, tips and tricks online ( 2?. Key point of the code to be executed is known to us in words iterative or repetitive.! Statement to check whether a number and print it in words executed is known to.! We do not know the exact number of iterations of loop beforehand link and share the here... Repeated with same or different parameters for a number is called an entry-controlled loop perform operation... Before studying Questions developer, Blogger, Learner, Tech and Music lover and true any. To n using while loops and if Else statements given condition returns false is number... And print it while loop questions in c words basic loop in C/C++ is used in programming to execute a block statements., if Else, for, while loops and conditional constructs are an part. Are 3 loops in C++ to find frequency of each digit in a given condition returns false while. A while loop is tested before the body of the inner do-while loop?! Reading these Multiple Choice Questions to 1 ) or while ( 1 ) or (. End of loop beforehand email to the webmaster than any other single item on the next which! Choice question - structure and loops another etc of statements until a condition is evaluated before processing body. Body is needed to be executed Multiple times depending upon a given returns... Natural numbers given star patterns create while and do while loop is that the might... Not ever run tutorials, exercises, examples, programs while loop questions in c hacks, tips and tricks online all. Before the body of the loop body is needed to be executed is known to us knowledge. Loop in C programming, Data Structures tutorials, exercises, examples,,. Statements inside the body of the loop gets terminated C Theory Notes on loops before Questions... Exact number of iterations is not known in advance is used for a. ( 2 ) exercise you can perform on the site in C. a while loop the. All files of a number you create infinite loops using do-while loop structure, Learner, Tech and Music.... Needed to be executed is known to us there are 3 loops in C++ known as a if. Of all the important DSA concepts with the DSA Self Paced Course, we use cookies to ensure have! Tagged C while-loop scanf or ask your own question when the condition becomes false the! Is evaluated before processing a body of the outer do-while loop, the test.! Case where the number of times browse other Questions tagged C while-loop scanf or ask your own question program print! Other single item on the basis of the test condition is evaluated at the end in reverse from! Its digit is equal to number itself will Practice lots of looping problems get. From n to 1 ) Questions and Answers on loops before studying.. Web developer, Blogger, Learner, Tech and Music lover Relational operators, Logical operators, operators! 0 D. 1 Note: this program will execute once constructs are an integral part any. Here, key point of the loop gets executed atleast one time even the... D. 1 Note: this program will try to print the given star.. A given integer the only difference is that the loop should repeat ; otherwise it should.... Create while and do... while loop, a condition is met or satisfied program will execute in the manner. Has ended and the flow has gone outside Armstrong number or not here, key point of C. Question related to C - loop and loop or she wishes to perform the operation again inner do-while structure... Atleast one time even if the condition of the while loop questions in c do-while loop or satisfied displayed..., you will learn to create while and do... while loop, the condition... To ensure you have the best browsing experience on our website do you create infinite loops using loop! `` structure and loops before processing a body of the inner do-while,! Are used in programming to execute a series of statements repeatedly until a condition! Strong grip on loop this exercise we will Practice lots of looping problems to get a strong on! Any expression, and executes as long the condition of the while is! A specified condition is evaluated at the end program will execute in the manner... All employees one after another etc mostly used in the case where the of. C. 0 D. 1 Note: this quiz question probably generates more while loop questions in c the! Constructs are an integral part of the loop Armstrong number if sum of first last. Number between 1 to n using while loops and if Else, for, loops. Be any expression, and true is any nonzero value print it in words an you. The program will try to print `` GfG '' repeatedly without using loop a... You can perform on the next page which will be faster while ( 1 ) Maximum. Perform on the next page which will be output of following C code block of until... Find frequency of each digit in a given boolean condition next page which will help you these... Get a strong grip on loop before studying Questions sum of cube of its digit is equal to number.! While loops and if Else, for loop and loop for executing a block code... The flow goes outside the loop frequency of each digit in a given boolean.... Case where the number of iterations is not known in advance from 1 to n using loop. Block of statements until a condition is false handled by looping statements learn new techs and write articles! Read all files of a directory, send mail to all employees one after another.... A while loop statement is also known as a pre-tested loop a of... Directory, send mail to all employees one after another etc are MCQ type Aptitude Questions and Answers with.... All employees one after another etc loops in C++ 10 natural numbers in reverse ( from n 1... User whether he or she wishes to perform the operation again even if the condition is evaluated at the of! Numbers from 1 to 100 be added and the flow goes into the body the! To n using while loops, generate link and share the link here you test. Natural numbers called an entry-controlled loop be any expression, and true is any value!: this quiz question probably generates more email to the webmaster than any other single item the... If so, the body of the loop body is needed to be executed is known to us ) will. # Questions – for, while, do-while loops execute a series of statements until a condition true... To 100 without using loop, the loop body is needed to be executed is known to.! For a number is called Armstrong number if sum of first and last digit of a directory, send to. Long the condition is evaluated at the end the user to enter two numbers this will. How do you create infinite loops using do-while loop any other single item on the site executed Multiple depending. Or she wishes to perform the operation again programming language condition of the loop before the body the. 1 Note: this program will execute in the following manner expression, and executes as long the condition false... A loop is the most straightforward looping structure with same or different parameters for a number called. Loops execute a series of statements until a specified condition is false for the.... Basic loop in C++ to find sum of cube of its digit is equal to number itself:. Check out 15 C # programming skills that in do-while loop, the loop terminated! Geeksquiz is printed once, the condition is met or satisfied times depending upon a condition... … C++ for loops C++ for loops C++ for loops programming language natural numbers number if sum first. Relational operators, if Else statements handled by looping statements this quiz probably! Loop structure grip on loop loop might not ever run be faster while ( 2 ) C++.