golang流程式控制制if語句

1. if else語句

基本文法

//單條件判斷if condition {    //do something}//多條件判斷if condition {} else if condition {    //do something} else {    //do something}　　

   

if 單條件先跟個語句然後再做條件判斷

if statement;condition{    //do something}//單條件，不帶語句的基本判斷package mainimport("fmt")func main(){nu := 1if nu %2 == 0 {fmt.Println("the number is even")} else{fmt.Println("the number is odd")}}//單條件，帶語句的判斷package mainimport("fmt")func main(){   if nu := 21; nu % 2 == 0 { //帶了一個指派陳述式然後再做的判斷   fmt.Println("The number is even")   } else{   fmt.Println("The number is odd ")   }}

　　註：不太建義這樣做因為邏輯看著就複雜了，但是可以減少代碼量

if 多條件先跟個語句然後再做條件判斷

//多條件，不帶語句的判斷package mainimport("fmt")func main(){num := 34if num <= 50{fmt.Println("Number is less then 50")} else if num >= 51 && num <= 100{fmt.Println("The number is between 51 and1 100")} else{fmt.Println("The number is greater than 100")}}//多條件，帶語句的判斷package mainimport("fmt")func main(){//num := 34if num := 78;num <= 50{fmt.Println("Number is less then 50")} else if num >= 51 && num <= 100{fmt.Println("The number is between 51 and1 100")} else{fmt.Println("The number is greater than 100")}}