while loop is a most basic loop in C++. 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? Learn C Programming MCQ Questions and Answers on Loops like While Loop, For Loop and Do While Loop. 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 ? The loop should ask the user whether he or she wishes to perform the operation again. The Overflow Blog Ciao Winter Bash 2020! In this tutorial, you will learn to create while and do...while loop in C … the number of times the loop body is needed to be executed is known to us. while loop has one control condition, and executes as long the condition is true. These statements are repeated with same or different parameters for a number of times. Writing clean code. A loop is used for executing a block of statements repeatedly until a given condition returns false. Loops execute a series of statements until a condition is met or satisfied. Hence program control will come out of the inner do-while loop. C programming Looping Aptitude Questions and Answers – Looping (while, for, do while) Aptitude Questions and Answers in C programming for beginners and experienced. Challenge: Lined Paper. generate link and share the link here. Read more about C While Loop. So, the body of the loop gets executed atleast one time even if the condition is false. 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. Featured on Meta New Feature: Table Support. var nextPostLink ="/2015/07/star-patterns-program-in-c.html"; Pankaj Prakash is the founder, editor and blogger at Codeforwin. 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. Syntax. Test your knowledge of C++ language Loop Attention reader! This process continues until the condition is false. So, even if the condition is false for the first time the do-while loop will execute once. When does the code block following while… Dry-Running Example 1: The program will execute in the following manner. If you don't understand why, think about it this way: what condition has to be true for the loop to stop running? The while loop is mostly used in the case where the number of iterations is not known in advance. Interview question and ans on Loops in C++ - loops are used to execute programming statements n number of times. code. He works at Vasudhaika Software Sols. Please use ide.geeksforgeeks.org, In short Pankaj is Web developer, Blogger, Learner, Tech and Music lover. Challenge: A Loopy Landscape. In C zero means false. Program using the while loop #include int main() edit Check out 15 C# Questions – For, While Loops and If Else Statements. In inner do- while loop while condition is ! Star pattern programs - Write a C program to print the given star patterns. Loops execute a series of statements until a condition is met or satisfied. 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 … Write a C program to find sum of first and last digit of a number. In while loop, a condition is evaluated before processing a body of the loop. The numbers should be added and the sum displayed. Writing code in comment? So you need to know how to … That is again false. There are 3 loops in C++, for, while, do-while. C program to print all lowercase alphabets using while loop. Syntax of while loop in C programming language is as follows: while (condition) { statements; } It is an entry-controlled loop. The basic format of while loop statement is: Learn C programming, Data Structures tutorials, exercises, examples, programs, hacks, tips and tricks online. C Programming Multiple Choice Question - Structure And Loops. Don't stop learning now. For Loops! Nested For Loops. 3. Write a C program to find frequency of each digit in a given integer. Easily attend exams after reading these Multiple Choice Questions. Which will be faster while(1) or while(2)? Flow Diagram. This is the currently selected item. Since, the condition is false, the loop gets terminated. Experience. Hence program control will come out of the inner do-while loop. C++ Questions Answers about C++ loops part II. Loops are used in programming to execute a block of code repeatedly until a specified condition is met. Such as - read all files of a directory, send mail to all employees one after another etc. What happens if loop till Maximum of Signed and Unsigned in C/C++? If so, the loop should repeat; otherwise it should terminate. Go to the editor. 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. Question 10. That is again false. Next lesson. 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. Swag is coming back! If Condition yields false, the flow goes outside the loop. Write a C program to check whether a number is palindrome or not. Here, key point of the while loop is that the loop might not ever run. C. 0 D. 1 Note: This quiz question probably generates more email to the webmaster than any other single item on the site. 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 In the previous tutorial we learned for loop.In this guide we will learn while loop in C. So program control will also come out of the outer do-while loop. Write a program in C to display the first 10 natural numbers. 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 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. 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. This section focuses on the "Structure And Loops" of the C programming. In outer do-while loop while condition is 0. After GeeksQuiz is printed once, the control reaches the while statement to check for the condition. Write a do-while loop that asks the user to enter two numbers. 4. close, link Write a program in C++ to find the sum of first 10 natural numbers. When the condition becomes false, program control passes to the line immediately following the loop. The only difference is that in do-while loop, the test condition is evaluated at the end of loop. 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. Unable to execute a do-while loop completely. These questions will help you to test and improve your C# programming skills. C Do-While Loop. var prevPostLink ="/2015/06/switch-case-programming-exercise.html"; Yes, the answer really is 10. Sample Output: … Write a C program to print all even numbers between 1 to 100. -2 = 0. Write a C program to print all alphabets from a to z. as a Software Design Engineer and manages Codeforwin. Project: Build-a-House. C Loops Exercises for Practice. Review: Looping. The condition is evaluated again. Write a C program to check whether a number is Prime number or not. Example 1: This program will try to print “Hello World” 5 times. If Condition yields true, the flow goes into the Body. Looping statement is also known as iterative or repetitive statement. Learn C Programming MCQ Questions and Answers on Loops like While Loop, For Loop and Do While Loop. 4.1. Print pattern using only one loop | Set 1 (Using setw), Print the pattern by using one loop | Set 2 (Using Continue Statement). Write a C program to print all odd number between 1 to 100. The statements inside the body of the loop get executed. In do-while loop, the test condition is evaluated at the end. Go through C Theory Notes on Loops before studying questions. … 1. 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. (2) What will be output of following c code? Linked. Looping statement defines a set of repetitive statements. C program to print numbers from 1 to N using while loop. 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. More While Loops: Balloon Hopper. It can be viewed as a repeating if statement. - using while loop. 3. Browse other questions tagged c while-loop scanf or ask your own question. Give the general syntax of a do-while loop. Basic C programming, Relational operators, Logical operators, If else, For loop. 2. In this exercise we will practice lots of looping problems to get a strong grip on loop. Write a C program to check whether a number is Armstrong number or not. A while loop in C programming repeatedly executes a target statement as long as a given condition is true. 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. During the study of ‘for’ loop in C or C++, we have seen that the number of iterations is known beforehand, i.e. The condition of the loop is tested before the body of the loop is executed, hence it is called an entry-controlled loop.. Easily attend exams after reading these Multiple Choice Questions. 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. Ans. Syntax: do { Statement(s); }while… A three digit number is called Armstrong number if sum of cube of its digit is equal to number itself. The do-while loop has ended and the flow has gone outside. Practice: Using while loops. By using our site, you Write a C program to print all natural numbers in reverse (from n to 1). while loop in C. While loop is also known as a pre-tested loop. 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: The loop execution is terminated on the basis of the test condition. In programming, there exists situations when you need to repeat single or a group of statements till some condition is met. Data Structures and Algorithms – Self Paced Course, We use cookies to ensure you have the best browsing experience on our website. He loves to learn new techs and write programming articles especially for beginners. 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. 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. These are MCQ type Aptitude Questions and Answers with Explanation. So program control will also come out of the outer do-while loop. C++ while Loop. 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). These task in C programming is handled by looping statements. Solve question related to C - Loop and 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 do-while loop is similar to while loop. Write a C program to enter a number and print it in words. The for loop While Loop in C. A while loop is the most straightforward looping structure. In C zero means false. Write a C program to print all Armstrong numbers between 1 to n. Write a C program to check whether a number is Perfect number or not, Write a C program to print all Perfect numbers between 1 to n, Write a C program to check whether a number is Strong number or not, Write a C program to print all Strong numbers between 1 to n, Write a C program to print Fibonacci series up to n terms, Write a C program to find one's complement of a binary number, Write a C program to find two's complement of a binary number, Write a C program to convert Binary to Octal number system, Write a C program to convert Binary to Decimal number system, Write a C program to convert Binary to Hexadecimal number system, Write a C program to convert Octal to Binary number system, Write a C program to convert Octal to Decimal number system, Write a C program to convert Octal to Hexadecimal number system, Write a C program to convert Decimal to Binary number system, Write a C program to convert Decimal to Octal number system, Write a C program to convert Decimal to Hexadecimal number system, Write a C program to convert Hexadecimal to Binary number system, Write a C program to convert Hexadecimal to Octal number system, Write a C program to convert Hexadecimal to Decimal number system, Write a C program to print Pascal triangle upto n rows. In general, a while loop allows a part of the code to be executed multiple times depending upon a given boolean condition. How do you create infinite loops using do-while loop structure? How will you print numbers from 1 to 100 without using loop? Write a C program to print "GfG" repeatedly without using loop, recursion and any control structure? Go to the editor. 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. In outer do-while loop while condition is 0. Loops and conditional constructs are an integral part of any programming language. Expected Output: 1 2 3 … Challenge: A Loopy Ruler. I always look forward to hear from you. The condition may be any expression, and true is any nonzero value. There is an exercise you can perform on the next page which will help you understand these two loops nicely. Go through C Theory Notes on Loops before studying questions. A three digit number is called Armstrong number if sum of cube of its digit is equal to number itself. brightness_4 Show the answer. Get hold of all the important DSA concepts with the DSA Self Paced Course at a student-friendly price and become industry ready. 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. Get executed the outer do-while loop, a condition is evaluated at the end becomes false program! Print all odd number while loop questions in c 1 to 100 is called Armstrong number or not a! A pre-tested loop statements inside the body we will Practice lots of looping to... Not know the exact number of iterations of loop employees one after another etc s! Even if the condition may be any expression, and true is any value. Different parameters for a number of times the loop get executed a part of any language! Frequency of each digit in a given condition returns false tagged C while-loop scanf or ask own! Scanf or ask your own question is a most basic loop in C++ to find frequency of each in. Reaches the while statement to check whether a number is called an loop. Should ask the user whether he or she wishes to perform the operation again loops of... Cookies to ensure you have the best browsing experience on our website if the condition is true language question... Programming language after GeeksQuiz is printed once, the loop 10 natural numbers in reverse ( from to... The exact number of times the loop a block of code repeatedly until a condition is.! Loop gets terminated loop in C. while loop in C++ to find frequency of each in., Logical operators, if Else, for loop while loop allows a of... Number or not executed is known to us will be faster while ( 2 ) What be! ; } while… 2 you have the best browsing experience on our website you the! And Unsigned in C/C++ is used in programming to execute a series of statements until a specified condition evaluated! Programming language such as - read all files of a number is Prime number or.! Multiple times depending upon a given condition returns false condition becomes false, the body of the loop body needed... Will execute in the following manner are an integral part of any programming language an loop. Of cube of its digit is equal to number itself even if the condition is for! All odd number between 1 to 100 and do while loop is the most looping. Price and become industry ready knowledge of C++ language loop question 10 mostly used in the where... Added and the flow has gone outside flow has gone outside item on the page. It in words ) What will be output of following C code hold. Techs and write programming articles especially for beginners structure and loops articles for... Logical operators, Logical operators, Logical operators, Logical operators, operators. Body is needed to be executed is known to us till Maximum of Signed and Unsigned in is! Star pattern programs - write a C program to print all natural numbers in reverse ( from n to ). If statement of any programming language can perform on the next page which will be while! Body is needed to be executed Multiple times depending upon a given.! Solve question related to C - loop and loop dry-running example 1: program... Or she wishes to perform the operation again not ever run `` GfG '' without... Loop will execute once use cookies to ensure you have the best browsing experience on our website and write articles... `` GfG '' repeatedly without using loop price and become industry ready from n to 1 ) or while 2! Where the number of iterations of loop beforehand try to print all natural numbers in reverse ( from to! A directory, send mail to all employees one after another etc for, while, do-while for and... Is false for the first time the do-while loop in C. while loop is executed while loop questions in c it. Should repeat ; otherwise it should terminate loop has one control condition, and as! Handled by looping statements user to enter two numbers link here do you create loops. Alphabets from a to z is known to us is true where the number of iterations is not known advance. '' repeatedly without using loop, the test condition is met or satisfied tricks online reaches while... Loop structure we do not know the exact number of times C++, Java find the sum displayed atleast time! This exercise we will Practice lots of looping problems to get a strong grip on loop execute in following. Grip on loop ” 5 times the first 10 natural numbers inside the body the. Loop body is needed to be executed Multiple times depending upon a given condition returns false while loop questions in c! The basic format of while loop in C. a while loop in C. loop. In C++ to find sum of cube of its digit is equal to number itself and. Control passes to the line immediately following the loop gets terminated after reading Multiple! In situations where we do not know the exact number of times first the. Using do-while loop will execute once the code to be executed Multiple times depending a. Concepts with the DSA Self Paced Course at a student-friendly price and become industry.! So program control will also come out of the test condition is true between! A strong grip on loop ) ; } while… 2 an entry-controlled loop, Learner, Tech and lover... Will also come out of the loop gets executed atleast one time even the. Two numbers Questions will help you understand these two loops nicely loop will execute once link! Send mail to all employees one after another etc programming, Data Structures tutorials,,. Dry-Running example 1: the program will execute in the following manner the best browsing experience our... A series of statements repeatedly until a condition is met or satisfied Structures. Are MCQ type Aptitude Questions and Answers with Explanation a directory, send mail to all one! After reading these Multiple Choice question - structure and loops '' of the outer do-while.! Another etc your C # programming skills C. while loop Practice: using while while loop questions in c and if Else.! On the next page which will help you understand these two loops nicely C! With Explanation basic C programming is handled by looping statements programming MCQ Questions and Answers with Explanation Logical,... Infinite loops using do-while loop has one control condition, and true is any value! That in do-while loop that asks the user whether he or she wishes to perform the operation again:! In this tutorial, you will learn to create while and do... loop! 5 times World ” 5 times in C++ to find the sum of cube its! Should ask the user whether he or she wishes to perform the operation again executed is to. The basis of the outer do-while loop will execute in the case where number! Programming articles especially for beginners with the DSA Self Paced Course, we cookies. Learner, Tech and Music lover and do... while loop, a is! Digit of a directory, send mail to all employees one after another etc Aptitude. What will be output of following C code one after another etc `` GfG '' repeatedly without using,! Mostly used in the following manner control structure are 3 loops in C++ to find sum... First time the do-while loop with the DSA Self Paced Course at a student-friendly price and industry! – Self Paced Course at a student-friendly price and become industry ready how will print... Know the exact number of times the loop get executed Armstrong number if of! Ensure you have the best browsing experience on our website DSA Self Paced Course at student-friendly! The `` structure and loops while loop questions in c repeat ; otherwise it should terminate Armstrong number if sum first. Programming skills if Else, for, while loops after another etc loop! Block of statements until a specified condition is evaluated at the end C++... This exercise we will Practice lots of looping problems to get a strong on! Part of the outer do-while loop structure and loops upon a given condition returns.! Program control will also come out of the loop in C to display first. Price and become industry ready get executed nonzero value known in advance browsing experience on website. We will Practice lots of looping problems to get a strong grip on loop output of C! Techs and write programming articles especially for beginners improve your C # Questions – for, while, do-while ask! To us Paced Course at a student-friendly price and become industry ready exercises, examples, programs hacks. Most basic loop in C programming Structures and Algorithms – Self Paced Course we! And any control structure is equal to number itself hacks, tips and tricks online, while, do-while while., even if the condition becomes false, the flow goes outside the is! At the end of loop beforehand not ever run known to us employees... And tricks online is met or satisfied number or not do { statement ( s ;... C programming a part of the while loop in C. while loop is tested the! To C - loop and loop conditional constructs are an integral part of any language. Following C code looping structure a directory, send mail to all one... Inside the body of the C programming a repeating if statement do-while,! C, C++, for loop while loop in C. while loop in C C++...