[Go]---control structure

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1 common control structures in the go language are: If statements, switch statements, and for loops

2 If statements are similar to the C language, but the condition is not enclosed in parentheses, it must have curly braces.

//if

varvalue int = 2

ifvalue%2 = = 0 {

FMT. Printf ("%d is even \ n", value)

    }

//if...else

ifvalue%2 = = 0 {

FMT. Printf ("%d is even \ n", value)

} else{

FMT. Printf ("%d is odd \ n", value)

    }

//if Multi-branch

Ifvalue < 0 {

FMT. Printf ("%d is negative \ n", value)

} Elseif value = = 0 {

FMT. Printf ("%d is 0 \ n", value)

} else{

FMT. Printf ("%d is positive \ n", value)

}

2 switch statement does not break, separate multiple case values with commas

/**switch branch statement Switch Statement No break can use a comma case multiple values ***/

varnumber int = 2

Switchnumber {

case1:

FMT. Println ("one")

case2:

FMT. Println ("both")

case3, 4,5:

FMT. Println ("Three,four,Five")

Default:

FMT. PRINTLN ("Invalidvalue")

}

3 For statement is also similar to C language, just to judge the condition does not use parentheses

/*** for loop ***/

for I: = 1; I < ten; i++ {

FMT. Printf ("%d\t", i)

    }

4 The Go language does not have a while statement

5 Small examples

Package Mainimport "FMT" Func Main () {/***IF statement if statement has no parentheses but must have curly braces to note the position of the curly braces ***///ifvar value int = 2if value%2 = = 0 {fmt. Printf ("%d is even \ n", value)}//if...elseif value%2 = = 0 {fmt. Printf ("%d is even \ n", value)} else {fmt. Printf ("%d is odd \ n", value)}//if Multi-branch if value < 0 {fmt. Printf ("%d is negative \ n", value)} else if value = = 0 {fmt. Printf ("%d is 0 \ n", value)} else {fmt. Printf ("%d is positive \ n", value)}/*** for loop ***/for i: = 1; I < 10; i++ {fmt. Printf ("%d\t", i)}fmt. Printf ("\ n")/** Switch Branch statement switch statement does not break can use comma case multiple values ***/var number int = 2switch # {case 1:fmt. Println ("one") case 2:fmt. Println ("a") Case 3, 4, 5:fmt. Println ("Three, four, five") default:fmt. PRINTLN ("Invalid value")}/*** the idea that there is no while loop in the Go Language ***/}