Step-by-Step Explanation of an Algorithm to Print Numbers from 1 to 5

Algorithm:

1. Start
2. Initialize a variable num with the value 1.
3. Repeat the following steps until num is greater than 5:
   • Print the value of num.
   • Increment num by 1.
4. End

Example in Pseudocode:

BEGIN
num ← 1
WHILE num ≤ 5 DO
PRINT num
num ← num + 1
END WHILE
END

The algorithm to print numbers from 1 to 5 involves iteration and incrementing a variable until a condition is met. Here’s a detailed explanation of each step:

1. Start

• This marks the beginning of the process.

2. Initialize a variable

• We create a variable called num and set its initial value to 1.
  • This is the starting point of our sequence.

3. Repeat the steps while a condition is true

• Use a loop to repeat a block of code. The loop runs as long as the condition num ≤ 5 is true.
  • Example: If num = 1, the condition 1 ≤ 5 is true, so the loop will execute.
  • The loop stops when num becomes greater than 5.

4. Print the value of num

• Inside the loop, we print the current value of num.
  • Example: When num = 1, it prints 1.

5. Increment the value of num

• After printing, we increase the value of num by 1.
  • This ensures that the loop moves forward and doesn’t run infinitely.
  • Example: After printing 1, num becomes 2.

6. End

• When num becomes greater than 5 (i.e., the condition num ≤ 5 is false), the loop stops, and the program ends.

Example Execution:

Key Concepts:

1. Looping: Repeating a block of code while a condition is true.
2. Incrementing: Gradually increasing the variable’s value to eventually stop the loop.
3. Condition Checking: Ensuring the loop stops at the right time.