Functions in C help divide a large program into smaller and manageable parts. This makes programs easier to understand, write, and debug. Instead of repeating the same code again and again, functions allow code reuse.
In this chapter, students will learn how to create functions, pass values to them, and return results. Understanding functions will help you write organized and efficient C programs.
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📄 Chapter 13 – Functions in C Complete Notes
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📝 MCQs – Chapter 13 Functions in C
1. What is a function in C language?
A) A variable used to store values
B) A block of code that performs a specific task
C) A keyword used for input
D) A type of loop
Answer: B) A block of code that performs a specific task
2. Which function is the starting point of every C program?
A) start()
B) program()
C) main()
D) run()
Answer: C) main()
3. What is the correct syntax of function declaration?
A) function_name return_type();
B) return_type function_name(parameter_list);
C) parameter_list function_name();
D) function_name(parameter_list return_type);
Answer: B) return_type function_name(parameter_list);
4. Which statement is used to send a value back from a function?
A) break
B) continue
C) return
D) exit
Answer: C) return
5. Which of the following is a library function in C?
A) add()
B) sum()
C) printf()
D) value()
Answer: C) printf()
6. Which keyword is used when a function does not return any value?
A) int
B) char
C) void
D) float
Answer: C) void
1. What is a function in C?
A function in C is a block of code that performs a specific task and runs only when it is called in a program.
2. Why are functions used in C programming?
Functions are used to divide large programs into smaller parts, making programs easier to write, understand, and debug.
3. What is the difference between library functions and user-defined functions?
Library functions are built-in functions provided by C, while user-defined functions are created by programmers to perform specific tasks.
4. What is the difference between local and global variables?
Local variables are declared inside a function and used only within that function, while global variables are declared outside functions and can be used throughout the program.
5. What is a function declaration in C?
Function declaration tells the compiler about the function name, return type, and parameters before the function is used.