In Chapter 10 – Input/Output in C, students learn how to take data from the user and display results on the screen using C language. This chapter introduces important functions like printf() for output and scanf() for input. You will also learn about format specifiers and different types of input and output functions.
This chapter is very important because almost every C program uses input and output functions. Understanding these concepts will help you write simple programs easily and prepare better for exams.
📥 Download Chapter 10 – Input/Output in C Notes
Skip to PDF contentYou can download the complete Class 12 Computer Science Chapter 10 – Input/Output in C Notes in PDF format from the link below. This PDF includes all important topics such as formatted input/output, printf(), scanf(), format specifiers, and unformatted input/output functions. It is very helpful for revision and exam preparation.
👉 Click here to Download Chapter 10 Notes PDF – Input/Output in C
📝 MCQs – Chapter 10 Input/Output in C
Q1: Which function is used to display formatted output in C?
a) scanf()
b) printf() ✅
c) getchar()
d) gets()
Q2: Which function is used to take formatted input in C?
a) printf()
b) scanf() ✅
c) puts()
d) putchar()
Q3: Which header file is required for input and output functions in C?
a) math.h
b) stdio.h ✅
c) string.h
d) conio.h
Q4: Which format specifier is used to input an integer value?
a) %f
b) %c
c) %d ✅
d) %s
Q5: Which format specifier is used for string data type?
a) %d
b) %f
c) %c
d) %s ✅
Q6: Which function is used to input a string from keyboard?
a) puts()
b) gets() ✅
c) putchar()
d) printf()
Q7: The scanf() function requires which symbol before variable name?
a) #
b) & ✅
c) %
d) *
❓FAQ – Chapter 10 Input/Output in C
Q1: What is Input/Output in C language?
Input/Output in C refers to the process of taking data from the user and displaying results on the screen using input and output functions.
Q2: What is the purpose of printf() function in C?
The printf() function is used to display formatted output on the computer screen.
Q3: What is the purpose of scanf() function in C?
The scanf() function is used to take formatted input from the user through the keyboard.
Q4: What are format specifiers in C?
Format specifiers are special symbols such as %d, %f, %c, and %s used in input and output functions to define the type of data.
Q13: What is an escape sequence?
Answer:
👉 An escape sequence is a special combination of characters that begins with a backslash (\) and is used to perform special formatting actions in output, such as creating a new line or inserting a tab space.
Q17: Define the scanf() function in C.
Answer:
👉 The scanf() function is used to accept input from the user through the keyboard. It can read numeric values, characters, and strings and store them in variables.
Example:scanf("%d", &num); reads an integer value from the user and stores it in the variable num.