Core Differences Between Control Structures

1. Sequential Control Structure

   • This type of control structure runs steps one after the other.
   • For example, when you calculate the area of a rectangle:
     $\text{Area} = \text{length} \times \text{width}$

2. Selection Control Structure

   • This structure runs steps based on certain conditions.
   • It can branch out in different ways.
   • For example, here’s an if statement to see if a number is positive:

     if (number > 0) {
         // Do something if true
     }
     

3. Iteration Control Structure

   • This structure repeats a block of code until it meets a specific condition.
   • For example, a for loop can be used to find the total of numbers:
     $\text{Sum} = 0; \text{for } i = 1 \text{ to } n: \text{Sum} += i$

Statistics About Control Structures

• Sequential structures are about 60% of the logic used in programming.
• Selection structures are used in about 30% of code.
• Iteration structures make up roughly 10% of common control structures.