Nested conditional statements in Go - Step-by-Step Execution

Concept Flow - Nested conditional statements

Start

↓

Check Condition 1

↓

Check Condition 2

↓

Execute nested block

↓

End

The program first checks the outer condition. If true, it checks the inner condition. Depending on these checks, it executes different code blocks.

Execution Sample

Go

package main
import "fmt"
func main() {
  x := 10
  if x > 5 {
    if x < 15 {
      fmt.Println("x is between 6 and 14")
    }
  }
}

This code checks if x is greater than 5, then if x is less than 15, and prints a message if both are true.

Execution Table

Step	Condition Checked	Condition Result	Branch Taken	Output
1	x > 5	true	Enter first if
2	x < 15	true	Enter nested if
3	Print message			x is between 6 and 14
4	End		Exit

💡 No more conditions to check, program ends.

Variable Tracker

Variable	Start	After Step 1	After Step 2	Final
x	10	10	10	10

Key Moments - 2 Insights

Why does the program check the second condition only if the first is true?

Because the second if is inside the first if block, it only runs if the first condition is true, as shown in steps 1 and 2 of the execution_table.

What happens if the first condition is false?

The program skips the nested if and any code inside it, going directly to the end, as indicated by the 'No' branch from step 1 in the concept_flow.

Visual Quiz - 3 Questions

Look at the execution_table, what is the result of the condition checked at step 2?

A undefined

B false

C true

D error

💡 Hint

Check the 'Condition Result' column for step 2 in the execution_table.

At which step does the program print the message?

A Step 2

B Step 3

C Step 1

D Step 4

💡 Hint

Look at the 'Output' column in the execution_table.

If x was 4, how would the execution_table change at step 1?

A Condition Result would be false

B Condition Result would be true

C Program would print the message

D Program would crash

💡 Hint

Refer to the variable_tracker and condition 'x > 5' in execution_table step 1.

Concept Snapshot

Nested conditional statements in Go:
if condition1 {
  if condition2 {
    // code runs if both true
  }
}
The inner if runs only if the outer if is true.
Use nesting to check multiple conditions step-by-step.

Full Transcript

This example shows nested conditional statements in Go. The program first checks if x is greater than 5. If yes, it then checks if x is less than 15. If both conditions are true, it prints a message. The execution_table traces each step: checking conditions and printing output. The variable_tracker shows x remains 10 throughout. Key moments clarify that the inner condition runs only if the outer is true, and if the first condition fails, the nested block is skipped. The visual quiz tests understanding of condition results and program flow. Nested conditionals help check multiple things in order.