MCQ on Control Statements in C

MCQ on Control Structure Statements in C. This is the 1st post for ICS Part-II | 2nd Year Computer Science Chapter No.11 (Decision Constructs). The given multiple choice questions (MCQs) with answers are important for the final exams and entry tests.

We have tried our best to make the important multiple choice questions on selection structures in C. This post covers the MCQs on topics i.e. control structures (sequence, selection, and loop), simple if statement, if-else statement, if-else if statement, comparison of nested if & sequence of ifs statements, switch statement, and conditional operator.

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➤ Decision Construct - Short Questions

➤ Input/Output - MCQs

➤ Input/Output - Exercise Programs

➤ Input / Output - Short Questions

Chap#11: Decision Constructs  | MCQs Online Quiz

 

1. An if statement inside another if statement is referred as?
   1.   simple if
   2.   nested if
   3.   sequence of if
   4.   if-else if
2. Decreasing nesting level leads to?
   1.   decrease in complexity
   2.   easy debugging
   3.   easy modification
   4.   all of these
3. Following symbols are not used with case label except?
   1.   dot (.)
   2.   colon (:)
   3.   semicolon (;)
   4.   comma (,)
4. How many types of loop statements loop?
   1.   2
   2.   3
   3.   4
   4.   5
5. For what value of a the given expression will evaluate to true: (age!=8)
   1.   age=9
   2.   age>8
   3.   age<8
   4.   all of these
6. In C, “ELSE” is an example of ?
   1.   keyword
   2.   standard identifier
   3.   keyword + standard identifier
   4.   none of these
7. In if-else if statement only ______ number of block of statements execute?
   1.   1
   2.   2
   3.   3
   4.   4
8. In switch statement, the case statement must end with?
   1.   end switch
   2.   end case
   3.   break
   4.   end
9. In which control structure, the instructions are executed as they are typed?
   1.   repetition
   2.   selection
   3.   sequence
   4.   none of these
10. The conditional operator is represented by?
    1.   (:)
    2.   (: ?)
    3.   (?)
    4.   (? :)
11. The process of checking validity of an algorithm by using sample data is called?
    1.   checking
    2.   debugging
    3.   desk checking
    4.   testing
12. Output of following code?
    main(){
    int score=85;
    if(score>=90)
    printf(“1”);
    if(score>=80)
    printf(“2”);
    if(score>=70)
    printf(“3”);
    if(score>=60)
    printf(“4”);}
    1.   2
    2.   1
    3.   123
    4.   234
13. Output of given code below?
    main(){
    int counter=1;
    switch(counter){
    case 1:
    printf(“computer”);
    break;
    case 2:
    printf(“physics”);
    break;
    default:
    printf(“chemistry”);}
    1.   computer
    2.   physics
    3.   chemistry
    4.   none of these
14. Output of following code?
    main(){
    int a=-3;
    (a>4)?printf(“%d”,++a) : printf(“%d”,a--);}
    1.   -3
    2.   -2
    3.   4
    4.   error
15. Output of following code?
    main(){
    int x=6;
    (x!=0)? printf(“NUST”): printf(“UET”);}
    1.   NUST
    2.   UET
    3.   syntax error
    4.   none of these
16. What will be the valid expression for statement given below?
    speed is not greater than 60
    1.   speed<=60
    2.   !(speed>60)
    3.   (speed<60 || speed==60)
    4.   all of these
17. When control flow reaches the logical decisions in nested if, the rest of statements are?
    1.   checked
    2.   executed
    3.   skipped
    4.   none of these
18. Which of the following is a disadvantage of sequence of if statement?
    1.   all conditions are tested
    2.   CPU time improves
    3.   fast execution of program
    4.   all of these
19. Which of the following operators combine two or more relational expressions to construct compound expression?
    1.   arithmetic
    2.   relational
    3.   logical
    4.   all of these
20. Which control structure choose statement or block of statements to execute?
    1.   sequence
    2.   selection
    3.   repetition
    4.   selection + repetition