Go Language if/else statement usage

Golang, the If/else keyword is used for conditional judgment, and if the condition is met, do something else, or do another thing.

--if statements can have no else

--You can add other statements before the conditional statement

--the scope of the variable declared in the statement is in all branches

MAKR: Conditional statements do not need parentheses in the go language, but branches must have curly braces

Grammar:

If Boolean expression {/* executes when the Boolean expression is true */} else {/* executes when the Boolean expression is false */}

Egg

Package Main

Import (

"FMT"

)

Func Main () {

/* Judge Boolean expression */

If 7%2 = = 0 {/* If the condition is true, execute the following statement */

Fmt. Println ("7 is even")

} else {/* If the condition is false, execute the following statement */

Fmt. Println ("7 is odd")

}

If 8%4 = = 0 {

Fmt. Println ("8 is divisible by 4")

} else {

Fmt. Println ("8 is odd")

}

Results: 7 is Odd8 was divisible by 4

2 notes in Go: 1, using "//" 2, using/*......*/

If you use formatted output, you need to replace println with printf.

Package Main

Import (

"FMT"

)

Func Main () {

var a int = 100

If a < 20 {

Fmt. Printf ("Less THAN 20\n")

} else {

Fmt. Printf ("More THAN 20\n")

}

Fmt. Printf ("Print A's value:%d\n", a)

}more THAN 20 Print A's value: 100

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Go Language if/else statement usage