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Go language self-study series | if else if statement in golang

2022-07-03 15:41:00 【51CTO】

Video source ：B standing 《golang Introduction to project practice [2021 newest Go Language course , There is no nonsense , Dry only ！ Ongoing update ...]》

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go Language if Statements can be nested multiple times , Make multiple judgments .

go In language if else if grammar 

      
      

       
       if  Boolean expression 1 {
       
       
    // do something
       
       
} else if  Boolean expression 2 {
       
       
    // do something else
       
       
}else {
       
       
    // catch-all or default
       
       
}
      
      

      
      
    
       
       
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go In language if else if Syntax examples

Judge the grade according to the score 

      
      

       
       package main
       
       

       
       
import "fmt"
       
       

       
       
func f5() {
       
       
    score := 80
       
       
    if score >= 60 && score <= 70 {
       
       
        fmt.Println("C")
       
       
    } else if score > 70 && score <= 90 {
       
       
        fmt.Println("B")
       
       
    } else {
       
       
        fmt.Println("A")
       
       
    }
       
       
}
       
       
func main() {
       
       
    f5()
       
       
}
      
      

      
      
    
       
       
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Running results 

      
      

       
       [Running] go run "/Users/guoliang/SynologyDrive/ software development /go/golang Introduction to project practice /goproject/360duote.com/pro01/test.go"
       
       
B
      
      

      
      
    
       
       
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It can also be written like this 

      
      

       
       package main
       
       

       
       
import "fmt"
       
       

       
       
func f5() {
       
       
    if score := 80; score >= 60 && score <= 70 {
       
       
        fmt.Println("C")
       
       
    } else if score > 70 && score <= 90 {
       
       
        fmt.Println("B")
       
       
    } else {
       
       
        fmt.Println("A")
       
       
    }
       
       
}
       
       

       
       
func main() {
       
       
    f5()
       
       
}
      
      

      
      
    
       
       
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Running results 

      
      

       
       [Running] go run "/Users/guoliang/SynologyDrive/ software development /go/golang Introduction to project practice /goproject/360duote.com/pro01/test.go"
       
       
B
      
      

      
      
    
       
       
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Enter the first letter of the day of the week to determine the day of the week , If the first letter is the same , Then continue to judge the second letter 

      
      

       
       package main
       
       

       
       
import "fmt"
       
       

       
       
func f6() {
       
       
    //  Monday Tuesday Wednesday Thursday Friday Saturday Sunday
       
       
    var c string
       
       
    fmt.Println(" Enter a character ：")
       
       
    fmt.Scan(&c)
       
       

       
       
    if c == "S" {
       
       
        fmt.Println(" Enter the second character ：")
       
       
        fmt.Scan(&c)
       
       
        if c == "a" {
       
       
            fmt.Println("Saturday")
       
       
        } else if c == "u" {
       
       
            fmt.Println("Sunday")
       
       
        } else {
       
       
            fmt.Println(" Input error ")
       
       
        }
       
       
    } else if c == "F" {
       
       
        fmt.Println("Friday")
       
       
    } else if c == "M" {
       
       
        fmt.Println("Monday")
       
       
    } else if c == "T" {
       
       
        fmt.Println(" Enter the second character ：")
       
       
        fmt.Scan(&c)
       
       
        if c == "u" {
       
       
            fmt.Println("Tuesday")
       
       
        } else if c == "h" {
       
       
            fmt.Println("Thursday")
       
       
        } else {
       
       
            fmt.Println(" Input error ")
       
       
        }
       
       
    } else if c == "W" {
       
       
        fmt.Println("Wednesday")
       
       
    } else {
       
       
        fmt.Println(" Input error ")
       
       
    }
       
       
}
       
       

       
       
func main() {
       
       
    f6()
       
       
}
      
      

      
      
    
       
       
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Running results 

      
      

       
       guoliangs-MacBook-Pro-15-inch:pro01 guoliang$ go run test.go
       
       
 Enter a character ：
       
       
M
       
       
Monday
      
      

      
      
    
       
       
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