main.go 源码
// Copyright © 2018 Inanc Gumus
// Learn Go Programming Course
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
//
// For more tutorials : https://learngoprogramming.com
// In-person training : https://www.linkedin.com/in/inancgumus/
// Follow me on twitter: https://twitter.com/inancgumus
package main
import (
"fmt"
"os"
"strconv"
)
func main() {
args := os.Args
if len(args) != 2 {
fmt.Println("Give me the size of the table")
return
}
size, err := strconv.Atoi(args[1])
if err != nil || size <= 0 {
fmt.Println("Wrong size")
return
}
// print the header
fmt.Printf("%5s", "X")
for i := 0; i <= size; i++ {
fmt.Printf("%5d", i)
}
fmt.Println()
for i := 0; i <= size; i++ {
// print the vertical header
fmt.Printf("%5d", i)
// print the cells
for j := 0; j <= size; j++ {
fmt.Printf("%5d", i*j)
}
fmt.Println()
}
}
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