[C#] Data Type and Sequence - IPO Charts E

📋 This is my note-taking from what I learned in the class “Programming 1 - COMP 100-002”

Problem

Create a program that calculates and displays the average of three numbers. The user will enter the three numbers.
Sample calculation:

1. Sum = first + second + third → 9 + 7 + 5 = 21
2. Average = sum / 3 → 21 /3

3 Column IPO Chart

Input	Processing	Output
first, second, third	sum	average
	Algorithm
	1. Enter first, second and third
	2. Calculate sum = first + second + third
	3. Calculate average = sum / 3
	4. Display average

Solution

2 Column IPO Chart:

IPO Chart → C# Statements

• Input: first, second, third

  // Input
  int first;
  int second;
  int third;
  
  /* int is a keyword that is used to declare a variable which can store an integral type of value (signed integer) the range from -2,147,483,648 to 2,147,483,647. It is an alias of System. */
  

• Processing: sum

  // Processing
  int sum;
  

• Output: average

  // Output
  int average;
  

• Algorithm

  • Prompt for first

    Console.Write("Enter the first number");
    

  • Accept first

    first = Convert.ToInt32(Console.ReadLine());
    

  • Prompt for second

    Console.Write("Enter the second number");
    

  • Accept second

    second = Convert.ToInt32(Console.ReadLine());
    

  • Prompt for third

    Console.Write("Enter the third number");
    

  • Accept third

    third = Convert.ToInt32(Console.ReadLine());
    

  • Calculate sum = first + second + third

    sum = first + second + third;
    

  • Calculate average = sum / 3

    average = sum / 3;
    

  • Display average

    ```csharp
    Console.Write(average);
    ```
    

    
    

Console.Write

• Console.Write Method
• Writing to the Console using Console.Write

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