Hello! Welcome to demofile.txt
This file is for testing purposes.
Good Luck!
package main
import (
"fmt"
"io/ioutil"
"strings"
)
func main() {
contents, err := ioutil.ReadFile("demofile.txt")
if err != nil {
fmt.Println("Error reading file")
}
words := strings.Split(string(contents)," ")
fmt.Println(len(words), words)
10 [Hello! Welcome to demofile.txt
This file is for testing purposes.
Good Luck!]Assume we have the following file, located in the same folder as Go main program that open a file.
Hello! Welcome to demofile.txt
This file is for testing purposes.
Good Luck!
package main
import (
"fmt"
"io/ioutil"
)
func main() {
content, err := ioutil.ReadFile("demofile.txt")
if err != nil {
fmt.Println("Error reading file")
}
fmt.Print(string(content))
}Output:
Hello! Welcome to demofile.txt
This file is for testing purposes.
Good Luck!
Go allows for user input.
That means we are able to ask the user for input.
package main
import (
"fmt"
"bufio"
"os"
)
func main() {
scanner := bufio.NewScanner(os.Stdin)
fmt.Print("Enter any character:")
scanner.Scan()
input := scanner.Text()
fmt.Printf("You type: %q", input)
}For numbers which are divisible of both 3 and 5, print “FizzBuzz” instead of the number. Divisible by 3 print “Fizz” and divisible by 5 print “Buzz”
package main
import (
"fmt"
)
func fizzBuzz(num int) {
for v := 1; v <= num; v++ {
if v % 15 == 0 {
fmt.Println("v:", v, "FizzBuzz")
} else if v % 5 == 0 {
fmt.Println("v:", v, "Buzz")
} else if v % 3 == 0 {
fmt.Println("v:", v, "Fizz")
} else {
fmt.Println("v:", v)
}
}
}
func main() {
fizzBuzz(20)
}