The document discusses input-output instructions in the C programming language. It defines input instructions as those that handle keyboard input from the user, like scanf() and getch(), and output instructions as those that print to the monitor, like printf(). It provides details on the syntax and use of the printf(), scanf(), and getch() functions for output and input in C. It encourages the reader to subscribe to the author's YouTube channel and follow their Facebook page for more information on C programming input and output.

1. Computer
Programming in C
Input-Output
Instructions in C
By : Rahul Sharma
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2. Input-Output
Instruction in C
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3. Input-Output Device
❑Standard Input Output Device
➢ Keyboard is standard input device.
➢ Monitor is standard output device.

4. Input-Output Instructions in C Language
❑Any Instruction that handle the screen(Monitor), or any Instruction that
is used to print something on output screen is called Output
Instruction.
❑Output Instruction is a statement in our program written by user, when
it run than a message print on monitor, that instruction is called as
Output Instruction .
❑Any Instruction that handle the Keyboard, or an Instruction that is used
to input some information by the user is called as Input Instruction.

5. Input-Output Instructions in C Language
❑printf() is a predefined function.
❑printf() is not a keyword.
❑ Printf() is a Output Instruction in C Programming.
❑The printf() function is used for output. It prints the given statement to the
console.
❑printf() prints two types of message on console screen(output screen).
➢ Print text as we written.
➢ Print value of expression or value of variable

6. Input-Output Instructions in C Language
❑The syntax of printf() function is given below:
✓ The format string can be %d (integer), %c (character), %s (string),
%f (float) etc.

7. Input-Output Instructions in C Language
❑scanf() is a predefined function.
❑scanf() is not a keyword.
❑scanf() is an Input Instructions.
❑The scanf() function is used to take inputs from user on console(output screen).
❑The syntax of scanf() function is given below:
✓ The format string can be %d (integer), %c (character), %s (string),
%f (float) etc.

8. Input-Output Instructions in C Language
❑getch() is a predefined function.
❑getch() is not a keyword.
❑getch() is an Input Instruction.
❑The getch() function is used to take inputs from user on console(output screen).
❑The syntax of scanf() function is given below:
✓ The format string can be %d (integer), %c (character), %s (string),
%f (float) etc.

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