Nested conditional statements in Go - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

Output of nested if-else with integers

What is the output of this Go program?

Go

package main
import "fmt"
func main() {
  x := 10
  if x > 5 {
    if x < 15 {
      fmt.Println("A")
    } else {
      fmt.Println("B")
    }
  } else {
    fmt.Println("C")
  }
}

A C

B B

C No output

D A

💡 Hint

Check the conditions step by step starting from the outer if.

The outer if checks if x > 5, which is true for x=10. Then the inner if checks if x < 15, also true, so it prints "A".

❓ Predict Output

intermediate

Nested if-else with strings

What will this Go program print?

Go

package main
import "fmt"
func main() {
  status := "active"
  if status == "active" {
    if len(status) >= 5 {
      fmt.Println("Long active")
    } else {
      fmt.Println("Active")
    }
  } else {
    fmt.Println("Inactive")
  }
}

A Inactive

B Active

C Long active

D No output

💡 Hint

Check the length of the string "active".

The status is "active" which matches the first if. The length of "active" is 6, which is greater than 5, so it prints "Long active".

❓ Predict Output

advanced

Nested if with multiple conditions

What is the output of this Go code?

Go

package main
import "fmt"
func main() {
  a, b := 3, 7
  if a < 5 {
    if b > 10 {
      fmt.Println("X")
    } else if b > 5 {
      fmt.Println("Y")
    } else {
      fmt.Println("Z")
    }
  } else {
    fmt.Println("W")
  }
}

A X

B Y

C Z

D W

💡 Hint

Check the values of a and b and follow the nested conditions carefully.

a is 3 which is less than 5, so the outer if is true. Then b is 7, which is not greater than 10 but greater than 5, so it prints "Y".

❓ Predict Output

advanced

Nested if with boolean variables

What will this Go program output?

Go

package main
import "fmt"
func main() {
  isRaining := false
  hasUmbrella := true
  if isRaining {
    if hasUmbrella {
      fmt.Println("Go outside")
    } else {
      fmt.Println("Stay inside")
    }
  } else {
    fmt.Println("Enjoy the sun")
  }
}

A Enjoy the sun

B Stay inside

C Go outside

D No output

💡 Hint

Check the value of isRaining first.

Since isRaining is false, the outer if is false, so the else branch runs and prints "Enjoy the sun".

❓ Predict Output

expert

Nested if with variable shadowing

What is the output of this Go program?

Go

package main
import "fmt"
func main() {
  x := 5
  if x > 0 {
    x := 10
    if x > 5 {
      fmt.Println(x)
    } else {
      fmt.Println(0)
    }
  } else {
    fmt.Println(-1)
  }
  fmt.Println(x)
}

A

10
5

B

10
10

C

5
5

D

-1
5

💡 Hint

Remember that the inner x shadows the outer x inside the if block.

Inside the if block, x is redeclared as 10. So the first print prints 10. Outside the block, x is still 5, so the second print prints 5.