英文:
How can i call functions on Golang?
问题
我几天前开始编码，现在不知道如何调用我现在创建的小项目中的函数。这是一个简单的问题，但我很困扰。我将在下面留下我的代码，谢谢！
package main
import "fmt"
func law(grade int) (mathews, john int) {
mathews = 65
john = 69
grade = 70
return
}
func main() {
mathews, john := law(70)
if mathews < grade {
fmt.Println("Mathews，你不能加入哈佛大学。")
} else {
fmt.Println("恭喜，Mathews。你通过了！")
}
if john < grade {
fmt.Println("John，你不能加入哈佛大学。")
} else {
fmt.Println("恭喜，John。你通过了！")
}
}
你需要在 main 函数中调用 law 函数，并将返回的值赋给 mathews 和 john 变量。然后，你可以使用这些变量进行条件判断和打印输出。希望对你有帮助！
英文:
I started coding a few days ago and I don't know how to call functions for a small project that I create now. It's a simple question but I'm struggling a lot. I will leave my code below, thank you!
package main
import "fmt"
func law(grade int) (mathews, john int) {
mathews = 65
john = 69
grade = 70
return
}
func main() {
law()
if mathews < grade {
fmt.Println("Mathews, you are not allow to join on Harvard.")
} else {
fmt.Println("Congratulations, Mathews. You passed!")
}
if john < grade {
fmt.Println("John, you are not allow to join on Harvard.")
} else {
fmt.Println("Congratulations, John. You passed!")
}
}
答案1
得分: 1
有多个问题：
- 你的函数
law有一个参数grade，但是在调用函数时没有提供该参数。 - 当你调用函数时，你需要将函数返回的结果存储在一个变量中。
尝试像这样做：
package main
import "fmt"
func law(grade int) (mathews, john int) {
mathews = 65
john = 69
grade = 70 // 这一行没有起作用，所以你应该将其删除。
return
}
func main() {
grade := 70
mathews, john := law(grade)
if mathews < grade {
fmt.Println("Mathews，你不能加入哈佛大学。")
} else {
fmt.Println("恭喜，Mathews。你通过了！")
}
if john < grade {
fmt.Println("John，你不能加入哈佛大学。")
} else {
fmt.Println("恭喜，John。你通过了！")
}
}
在A Tour of Go中查看函数的使用方法：https://tour.golang.org/basics/4。
英文:
There are multiple issue:
- Your function
lawhas an argumentgradebut you are not providing that argument when you are calling the function. - When you call the function you need to store whatever is returned by the function in a variable.
Try something like this
package main
import "fmt"
func law(grade int) (mathews, john int) {
mathews = 65
john = 69
grade = 70 // This line is not doing anything so you should actually remove it.
return
}
func main() {
grade := 70
mathews, john := law(grade)
if mathews < grade {
fmt.Println("Mathews, you are not allow to join on Harvard.")
} else {
fmt.Println("Congratulations, Mathews. You passed!")
}
if john < grade {
fmt.Println("John, you are not allow to join on Harvard.")
} else {
fmt.Println("Congratulations, John. You passed!")
}
}
Checkout functions in A Tour of Go: https://tour.golang.org/basics/4 for a basic run through on how to use functions in Go.
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