1. if else

package mainimport "fmt"func main(){    a :=123    if a>100{        fmt.prinln("大于100")     }else{       fmt.println("小于100")    }}

　　

2. switch

例1

var shuxue int = 300    switch {    case shuxue == 100:        fmt.Println("111")    case shuxue == 200:        fmt.Println("222")    default:        fmt.Println("ok")    }

 

例2

var marks int = 90var grade string switch marks {    case 90:        grade = "A"    case 80:        grade = "B"    default:        grade = "D"    }    fmt.Println(grade)