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Golang Questions Set 14:

Quiz Mode

Which of the following is NOT a method of the io.Writer interface in Go?

WriteString

WriteBytes

WriteAt

Flush

Solution:

What is the output of the following code snippet?
package main
import "fmt"
func main() {
   x := []int{1, 2, 3}
   y := &x
   fmt.Println((*y)[0])
}

Solution:

What is the output of the following Go code?
package main
import "fmt"

func change(p int) {
   p = 20
}

func main() {
   x := 10
   p := &x
   change(p)
   fmt.Println(x)
}

Solution:

What is the output of the following Go code?
package main
import "fmt"

func main() {
   x := 10
   p := &x
   fmt.Println(p)
   p = 20
   fmt.Println(x)
}

10, 10

10, 20

20, 10

20, 20

Solution:

What is the output of the following code snippet?
package main
import "fmt"
func main() {
   x := 5
   y := &x
   fmt.Println(y)
}

memory address in hexadecimal

Compilation error

Runtime error

Solution:

What is the output of the following code?
package main
import "fmt"

func main() {
   var ptr int
   var num int = 10
   ptr = &num
   fmt.Printf("Value of ptr: %d\n", ptr)
}

Address of num

Compilation error

Solution:

What is the output of the following Go code?
package main
import "fmt"

func change(p int) {
   p = p + 10
}

func main() {
   x := 10
   p := &x
   fmt.Println(p)
   change(p)
   fmt.Println(*p)
}

10, 10

10, 20

20, 10

20, 20

Solution:

What is the output of the following Go code?
package main
import "fmt"

func swap(p, q int) {
   p, q = q, *p
}

func main() {
   x := 10
   y := 20
   p := &x
   q := &y
   swap(p, q)
   fmt.Println(x, y)
}

10, 20

20, 10

Compilation error

Runtime error

Solution:

Which of the following statements is true about the fmt.Stringer interface in Go?

It is used to format strings in a Go program

It is used to implement custom string representations of a type

It is used to handle errors in a Go program

It is used to create new types from existing ones

Solution:

What is the purpose of the sort.Interface interface in Go?

To define a way to sort collections of values in a Go program

To define a way to handle errors in a Go program

To define a way to format strings in a Go program

To define a way to implement custom serialization of a type in a Go program

Golang Questions Set 14:

Which of the following is NOT a method of the io.Writer interface in Go?

Solution:

What is the output of the following code snippet?
package main
import "fmt"
func main() {
   x := []int{1, 2, 3}
   y := &x
   fmt.Println((*y)[0])
}

Solution:

What is the output of the following Go code?
package main
import "fmt"

func change(p int) {
   p = 20
}

func main() {
   x := 10
   p := &x
   change(p)
   fmt.Println(x)
}

Solution:

What is the output of the following Go code?
package main
import "fmt"

func main() {
   x := 10
   p := &x
   fmt.Println(p)
   p = 20
   fmt.Println(x)
}

Solution:

What is the output of the following code snippet?
package main
import "fmt"
func main() {
   x := 5
   y := &x
   fmt.Println(y)
}

Solution:

What is the output of the following code?
package main
import "fmt"

func main() {
   var ptr int
   var num int = 10
   ptr = &num
   fmt.Printf("Value of ptr: %d\n", ptr)
}

Solution:

What is the output of the following Go code?
package main
import "fmt"

func change(p int) {
   p = p + 10
}

func main() {
   x := 10
   p := &x
   fmt.Println(p)
   change(p)
   fmt.Println(*p)
}

Solution:

What is the output of the following Go code?
package main
import "fmt"

func swap(p, q int) {
   p, q = q, *p
}

func main() {
   x := 10
   y := 20
   p := &x
   q := &y
   swap(p, q)
   fmt.Println(x, y)
}

Solution:

Which of the following statements is true about the fmt.Stringer interface in Go?

Solution:

What is the purpose of the sort.Interface interface in Go?

Solution:

Related Question Sets:

Related Topics:

Golang Questions Set 14:

Which of the following is NOT a method of the io.Writer interface in Go?

Solution:

What is the output of the following code snippet?package mainimport "fmt"func main() { x := []int{1, 2, 3} y := &x fmt.Println((*y)[0])}

Solution:

What is the output of the following Go code?package mainimport "fmt"func change(p *int) { *p = 20}func main() { x := 10 p := &x change(p) fmt.Println(x)}

Solution:

What is the output of the following Go code?package mainimport "fmt"func main() { x := 10 p := &x fmt.Println(*p) *p = 20 fmt.Println(x)}

Solution:

What is the output of the following code snippet?package mainimport "fmt"func main() { x := 5 y := &x fmt.Println(y)}

Solution:

What is the output of the following code?package mainimport "fmt"func main() { var ptr *int var num int = 10 ptr = &num fmt.Printf("Value of ptr: %d\n", *ptr)}

Solution:

What is the output of the following Go code?package mainimport "fmt"func change(p *int) { *p = *p + 10}func main() { x := 10 p := &x fmt.Println(*p) change(p) fmt.Println(*p)}

Solution:

What is the output of the following Go code?package mainimport "fmt"func swap(p, q *int) { *p, *q = *q, *p}func main() { x := 10 y := 20 p := &x q := &y swap(p, q) fmt.Println(x, y)}

Solution:

Which of the following statements is true about the fmt.Stringer interface in Go?

Solution:

What is the purpose of the sort.Interface interface in Go?

Solution:

Related Question Sets:

Related Topics:

What is the output of the following code snippet?
package main
import "fmt"
func main() {
x := []int{1, 2, 3}
y := &x
fmt.Println((*y)[0])
}

What is the output of the following Go code?
package main
import "fmt"

func change(p int) {
p = 20
}

func main() {
x := 10
p := &x
change(p)
fmt.Println(x)
}

What is the output of the following Go code?
package main
import "fmt"

func main() {
x := 10
p := &x
fmt.Println(p)
p = 20
fmt.Println(x)
}

What is the output of the following code snippet?
package main
import "fmt"
func main() {
x := 5
y := &x
fmt.Println(y)
}

What is the output of the following code?
package main
import "fmt"

func main() {
var ptr int
var num int = 10
ptr = &num
fmt.Printf("Value of ptr: %d\n", ptr)
}

What is the output of the following Go code?
package main
import "fmt"

func change(p int) {
p = p + 10
}

func main() {
x := 10
p := &x
fmt.Println(p)
change(p)
fmt.Println(*p)
}

What is the output of the following Go code?
package main
import "fmt"

func swap(p, q int) {
p, q = q, *p
}

func main() {
x := 10
y := 20
p := &x
q := &y
swap(p, q)
fmt.Println(x, y)
}