Input & Output | Computer for GCSE/IGCSE - Year 11 PDF Download

Output

Output refers to the process of displaying or saving the results of a program to the user.

• Pseudocode example: OUTPUT "Hello, ", name
• Python example: print("Hello, ", name)
• Java example: System.out.println("Hello, " name);
• Visual Basic example: Console.WriteLine( "Hello, " & name)

Explanation

• Output: Output in programming refers to the act of showing or storing the results of a program for the user to see. It can be text, images, or any other form of data.
• Pseudocode example: In pseudocode, an output statement might look like OUTPUT "Hello, ", name, where "Hello, " is displayed along with the value of the variable 'name'.
• Python example: In Python, you can achieve output using print("Hello, ", name), which prints "Hello, " followed by the value of 'name'.
• Java example: In Java, output can be done with System.out.println("Hello, " name);, which prints "Hello, " and the value of 'name' to the console.
• Visual Basic example: For Visual Basic, the output statement Console.WriteLine( "Hello, " & name) concatenates "Hello, " with the value of 'name' and displays the result.
• Definition of Input: Input involves providing data or information to a program.
• User Input: Data entered by the user during the execution of a program.

Input

Input involves supplying data or information to a program.
'User Input' denotes data or information provided by the user while the program is running.

• Pseudocode sample:
  DISPLAY "Enter your name"
  GET name
• Python sample:
  name = input("Enter your name: ")
• Java sample:
  Scanner input = new Scanner(System.in);
  System.out.print("Enter your name: ");
  String name = input.nextLine();
• Visual Basic sample:
  Console.WriteLine("Enter your name")
  name = Console.Readline()

Explanation

• Pseudocode: In pseudocode, to prompt the user for their name, you would use commands like OUTPUT "Enter your name" and INPUT name.
• Python: In Python, you can prompt for user input using the input() function. For instance, name = input("Enter your name: ").
• Java: In Java, you would utilize a Scanner object to receive user input. An example would be Scanner input = new Scanner(System.in); System.out.print("Enter your name: "); String name = input.nextLine();
• Visual Basic: For Visual Basic, you could use commands like Console.WriteLine("Enter your name") and name = Console.ReadLine() for user input.