MCQs on Introduction to C Programming | C Programming

500+ Free C Programming MCQs Quiz |Perfect for Practice & Exams! MCQs on Introduction to C Programming | C Programming

Explore the fundamentals of C programming with this comprehensive collection of multiple-choice questions (MCQs). Perfect for beginners, these questions cover key concepts like variables, functions, operators, and control structures. Test your knowledge and enhance your understanding of C programming.

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Chapter 1: Introduction to C Programming

1. History of C

Who developed the C programming language?
- a) Bjarne Stroustrup
- b) Dennis Ritchie
- c) James Gosling
- d) Brian Kernighan
Which programming language is the predecessor of C?
- a) Assembly
- b) ALGOL
- c) B
- d) Java
When was the C programming language created?
- a) 1980
- b) 1972
- c) 1990
- d) 1969
Which company developed the C language?
- a) IBM
- b) AT&T Bell Labs
- c) Microsoft
- d) Oracle
What was the primary purpose of the creation of C?
- a) To develop operating systems
- b) To create web applications
- c) To write software for mobile devices
- d) To create games
C language was originally developed for which operating system?
- a) Windows
- b) UNIX
- c) DOS
- d) Linux
Which language did C replace in the early 1970s?
- a) COBOL
- b) Fortran
- c) B
- d) Pascal
What is the origin of the name “C” for the C programming language?
- a) The first letter of the developer’s name
- b) It comes from the predecessor language, “B”
- c) It stands for “Complex”
- d) None of the above
Which year was C standardized by ANSI (American National Standards Institute)?
- a) 1983
- b) 1991
- c) 1995
- d) 2000
What was the impact of C on modern programming languages?
- a) It introduced object-oriented programming concepts
- b) It led to the development of many programming languages
- c) It focused only on mathematical calculations
- d) None of the above

2. Features and Applications of C

Which of the following is a feature of the C language?
- a) High-level language
- b) Procedural language
- c) Object-oriented
- d) Interpreted language
Which of the following applications is C commonly used for?
- a) Web development
- b) System programming
- c) Desktop applications
- d) Mobile applications
Which of the following is NOT a feature of C?
- a) Portability
- b) Flexibility
- c) High-level language
- d) Object-oriented programming
What makes C a portable language?
- a) It can run on different platforms without modification.
- b) It is simple to learn.
- c) It provides extensive libraries.
- d) It is used in desktop applications.
C is a _____ programming language.
- a) Object-oriented
- b) Functional
- c) Procedural
- d) Logical
What makes C suitable for system-level programming?
- a) It is a high-level language.
- b) It allows direct manipulation of hardware.
- c) It supports object-oriented programming.
- d) It is easier to learn than assembly language.
Which of the following is an application of C?
- a) Operating system development
- b) Web page design
- c) Game development (JavaScript)
- d) None of the above
Which software development process benefits most from C programming?
- a) Web design
- b) Desktop application development
- c) Embedded systems development
- d) Video editing
Which of these is a key feature of C?
- a) Dynamic typing
- b) Direct memory manipulation
- c) Multi-paradigm programming
- d) Object-oriented
Which of the following is a disadvantage of C?
- a) It is not as fast as assembly language.
- b) It lacks memory control.
- c) It requires a specific hardware environment.
- d) It doesn’t support high-level operations.

3. Structure of a C Program

Which of the following is the first line of a basic C program?
- a) #include <stdio.h>
- b) int main()
- c) printf(“Hello World”);
- d) #define
Which keyword is used to declare the main function in C?
- a) function
- b) main
- c) start
- d) program
What is the purpose of the #include directive in C?
- a) To include a header file
- b) To define a function
- c) To declare a variable
- d) To print output
Where does the program execution start in a C program?
- a) From the main() function
- b) From printf()
- c) From #include
- d) From return 0
Which of the following sections is a part of the structure of a C program?
- a) Function definition
- b) Header files
- c) Variable declarations
- d) All of the above
What is the purpose of a header file in C?
- a) To define variables
- b) To declare functions
- c) To include libraries
- d) All of the above
Which of the following is an essential part of a C program?
- a) Data types
- b) Functions
- c) The main function
- d) Comments
What is the role of the return statement in C?
- a) To print output
- b) To return a value from a function
- c) To include libraries
- d) To declare variables
What is a valid C program structure?
- a) Header file → Function declaration → Main function
- b) Function declaration → Main function → Header file
- c) Header file → Main function → Function declaration
- d) None of the above
Which of these can be a C program’s entry point?
- a) int main()
- b) void start()
- c) void main()
- d) start()

4. Compilation and Execution Process

What is the first step in compiling a C program?
- a) Linking
- b) Preprocessing
- c) Assembly
- d) Execution
In which phase does the C compiler handle preprocessor directives like #include and #define?
- a) Preprocessing
- b) Compilation
- c) Linking
- d) Execution
What is the role of the linker in the C compilation process?
- a) Translates high-level code to machine code
- b) Combines object files into a single executable
- c) Handles syntax errors
- d) None of the above
What is generated after the compilation phase in the C compilation process?
- a) Object code
- b) Source code
- c) Executable file
- d) None of the above
Which tool is responsible for turning C source code into machine code?
- a) Compiler
- b) Editor
- c) Assembler
- d) Linker
In which phase does the C program become executable?
- a) Linking
- b) Compilation
- c) Preprocessing
- d) Execution
Which of the following is an error that can occur during the compilation process?
- a) Syntax error
- b) Runtime error
- c) Logical error
- d) All of the above
What is the purpose of an object file in C?
- a) It is an intermediate code before linking.
- b) It contains the final executable.
- c) It stores preprocessor directives.
- d) It defines the structure of the program.
What command is typically used to compile a C program in a Linux environment?
- a) gcc
- b) make
- c) clang
- d) link
What file is produced after a C program is compiled and linked?
- a) .exe
- b) .obj
- c) .out
- d) All of the above

5. Basic Syntax and Structure (main function, header files, etc.)

What does the #include <stdio.h> directive do?
- a) Includes the math library
- b) Includes the standard input/output library
- c) Defines a function
- d) Creates a variable
Which function is always executed first in a C program?
- a) printf
- b) scanf
- c) main
- d) start
Which of the following is a valid C function definition?
- a) main() { }
- b) void main() { }
- c) void main { }
- d) function main() { }
Which symbol is used to denote the end of a statement in C?
- a) ;
- b) .
- c) :
- d) ,
How is a comment written in C?
- a) // This is a comment
- b) # This is a comment
- c) /* This is a comment */
- d) Both a and c
What does the return 0; statement indicate in the main() function?
- a) Successful program execution
- b) Syntax error
- c) Logical error
- d) The end of the program
Which of these is required in every C program?
- a) main function
- b) printf function
- c) header files
- d) return statement
What does the void keyword in void main() indicate?
- a) The function has no parameters
- b) The function has no return value
- c) The function has parameters
- d) The function is an operator
What is the standard output function in C?
- a) print()
- b) output()
- c) printf()
- d) display()
What is the correct syntax to declare a variable in C?
- a) int x;
- b) x int;
- c) declare int x;
- d) int = x;

Answers

Answers:

No.	Answer
1	b) Dennis Ritchie
2	c) B
3	b) 1972
4	b) AT&T Bell Labs
5	a) To develop operating systems
6	b) UNIX
7	c) B
8	b) It comes from the predecessor language, “B”
9	a) 1983
10	b) It led to the development of many programming languages
11	b) Procedural language
12	b) System programming
13	d) Object-oriented programming
14	a) It can run on different platforms without modification.
15	c) Procedural
16	b) It allows direct manipulation of hardware.
17	a) Operating system development
18	c) Embedded systems development
19	b) Direct memory manipulation
20	c) It requires a specific hardware environment.
21	a) #include <stdio.h>
22	b) main
23	a) To include a header file
24	a) From the `main()` function
25	d) All of the above
26	c) To include libraries
27	c) The main function
28	b) To return a value from a function
29	a) Header file → Function declaration → Main function
30	a) int main()
31	b) Preprocessing
32	a) Preprocessing
33	b) Combines object files into a single executable
34	a) Object code
35	a) Compiler
36	a) Linking
37	a) Syntax error
38	a) It is an intermediate code before linking.
39	a) gcc
40	a) .exe
41	b) Includes the standard input/output library
42	c) main
43	a) main() { }
44	a) ;
45	d) Both a and c
46	a) Successful program execution
47	a) main function
48	b) The function has no return value
49	c) printf()
50	a) int x;

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