| Branching with `if` and `else` in Go is straight-forward. | ||
package main |
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import "fmt" |
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func main() { |
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| Here's a basic example. | if 7%2 == 0 { |
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fmt.Println("7 is even") |
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} else { |
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fmt.Println("7 is odd") |
7 is odd |
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} |
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| You can have an `if` statement without an else. | if 8%4 == 0 { |
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fmt.Println("8 is divisible by 4") |
8 is divisible by 4 |
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} |
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| A statement can precede conditionals; any variables declared in this statement are available in all branches. | if num := 9; num < 0 { |
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fmt.Println(num, "is negative") |
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} else if num < 10 { |
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fmt.Println(num, "has 1 digit") |
9 has 1 digit |
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} else { |
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fmt.Println(num, "has multiple digits") |
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} |
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} |
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| Note that you don't need parentheses around conditions in Go, but that the braces are required. |