1
C language has been developed by
Correct AnswerDennis Ritchie
☑ MCQ PRACTICE
Programming for Problem Solving Unit 1
Practice objective questions for quick revision and examination preparation. Try answering each question before revealing the answer.
Programming for Problem Solving - Unit-1
2
C programs are converted into machine language with the help of
Correct AnswerCompiler
3
In C Programming a variable cannot start with
Correct AnswerBoth (B) & (C) above
4
Which of the following statements is false
Correct AnswerEach new C instruction has to be written on a separate line
5
Which of the following is a primary role of a compiler?
Correct AnswerTranslate source code into machine code
6
In C programming, what is the data type that can store decimal numbers?
Correct Answerfloat
7
What type of error occurs when the syntax of the code is incorrect?
Correct AnswerSyntax error
8
Which of the following storage classes in C has a scope limited to the block in which it is defined?
Correct Answerauto
9
What does the 'printf' function primarily do?
Correct AnswerOutputs formatted data to the console
10
Which operator is used for bitwise AND operation in C?
Correct Answer&
11
In a switch-case statement, what is the purpose of the 'default' case?
Correct AnswerTo handle unspecified cases
12
Which loop in C will always execute at least once?
Correct Answerdo-while loop
13
What is the correct way to declare an integer variable in C?
Correct Answerint number;
14
Which of the following is not a valid C data type?
Correct Answerstring
15
What does the 'goto' statement do in C?
Correct AnswerJump to a specific line of code
16
Which command line argument is typically used to pass input to a C program?
Correct Answerargv
17
In C, what will be the output of printf("%d", 5 + 3 * 2);
Correct Answer11
18
Which of the following correctly describes a prime number?
Correct AnswerA number that can be divided evenly by 1 and itself
19
What is the output of the following code snippet? printf("%c", 'A' + 1);
Correct AnswerB
20
In a flowchart, what does the diamond shape represent?
Correct AnswerDecision
21
Which operator is used for bitwise OR operation in C?
Correct Answer|
22
What type of loop would you use when the number of iterations is not known beforehand?
Correct Answerdo-while loop
23
What is the purpose of 'extern' storage class?
Correct AnswerTo make a variable available across multiple files
24
Which of the following is a correct declaration of a float variable in C?
Correct Answerfloat number = 5.5;
25
In C, how do you indicate a comment that spans multiple lines?
Correct Answer/* comment */
26
What does the 'sizeof' operator do in C?
Correct AnswerReturns the size of a variable in bytes
27
Which of the following is an example of a logical error?
Correct AnswerIncorrect output despite correct syntax
28
What is the result of the expression 5 & 3 in C?
Correct Answer1
29
Which of the following is an example of explicit type casting in C?
Correct Answerfloat y = (float)7;
30
A user wants to calculate the area of a rectangle with a length of 5 and a width of 10. Which algorithm would best describe the solution?
Correct AnswerArea = Length × Width
31
You are designing an app to determine if a user’s age qualifies for a senior citizen discount. What conditional statement would you use?
Correct Answerif age >= 60
32
A program needs to find the maximum score from a list of exam scores. Which storage class would be best for the maximum score variable within the function?
Correct Answerauto
33
You want to print a message in a C program indicating successful completion of a task. Which output function would you use?
Correct Answerprintf("Task completed successfully.");
34
When compiling a program, what is generated that the operating system can execute directly?
Correct AnswerObject code
35
A grocery store wants to calculate discounts for products. If the original price is $50 and the discount is 20%, what should be the new price calculated using C?
Correct AnswerNew Price = 50 - (50 * 0.2)
36
If you want to iterate through a list of customer names using a loop, which loop structure would be most appropriate if you know the number of names?
Correct Answerfor loop
37
Which loop in C is used when you want the loop to execute at least once?
Correct Answerdo-while loop
38
A program needs to read a user's input for their favorite fruit. Which function would you use?
Correct Answerscanf()
39
To track a global variable used across multiple files in a project, which storage class should you choose?
Correct Answerextern
40
If you want to store a list of ages, which data type would be most appropriate in C?
Correct Answerint
41
Which bitwise operation would you use to toggle a specific bit in a number?
Correct AnswerXOR
42
To find the minimum number in a list of temperatures, which pseudocode step is essential?
Correct AnswerCompare each temperature with the current minimum.
43
Which type of error occurs when the program runs but produces incorrect results?
Correct AnswerLogical error
44
In a program to determine eligibility for voting, which conditional structure would you use to check if a person is over 18 years old?
Correct Answerif-else
45
A function needs to output a formatted date, such as "Today is: 2024-10-16". Which C function is best for this?
Correct Answerprintf()
46
You are writing a program to find out how many times a user can afford a $10 movie ticket with $100. Which operator would you use?
Correct Answer/
47
To create a simple menu for user choices, which structure would be most appropriate?
Correct Answerswitch-case
48
Which statement correctly identifies the output of printf("%d", 10 >> 1);?
Correct Answer5
49
When reading a floating-point number from user input, which format specifier should you use in scanf?
Correct Answer%f
50
In a project that requires a calculation for the area of a triangle, what formula would you represent in pseudocode?
Correct AnswerArea = 0.5 * base * height
51
Which logical operator would you use to check if a number is both even and greater than zero?
Correct AnswerAND
Fill in the Blanks
52A ______________ is a software tool that translates high-level programming code into machine code or an intermediate code.
Correct AnswerCompiler
53After compilation, the result is typically an ______________ file, which can be executed directly by the computer.
Correct AnswerExecutable
54The first step in program execution is the ______________ phase, where the operating system loads the program into memory.
Correct AnswerLoading
55A ______________ is a step-by-step set of instructions for solving a specific problem.
Correct AnswerAlgorithm
56Flowcharts are a graphical way to represent algorithms using ______________ and ______________.
Correct AnswerSymbols, arrows
57In a flowchart, a rectangle is used to represent a ______________.
Correct AnswerProcess
58______is a programming paradigm that promotes the use of functions or procedures to break a program into smaller, manageable parts.
Correct AnswerStructured Programming
59A variable's ____________ defines the type of data it can hold.
Correct Answerdata type
60The size of the char data type in C is ____________ bytes.
Correct Answer1
61A ____________ error occurs when the code violates the rules of the programming language.
Correct Answersyntax
62Logical errors can lead to incorrect program ____________.
Correct Answerbehavior
63In the expression 5 + 3 * 2, the multiplication operator * has higher ____________ than the addition operator +.
Correct Answerprecedence
64In C, the result of integer division, such as 7 / 3, is ____________.
Correct Answer2
65The ____________ storage class specifies that a variable's value is retained between function calls.
Correct Answerstatic
66The ____________ storage class is used to declare global variables.
Correct Answerextern
67Explicit type conversion is also known as ____________.
Correct Answercasting