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Update ch3-06-2.md

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@ -37,7 +37,7 @@ fmt.Println(5 / 9 * (f - 32)) // "0"; 5/9 is an untyped integer, 0
fmt.Println(5.0 / 9.0 * (f - 32)) // "100"; 5.0/9.0 is an untyped float fmt.Println(5.0 / 9.0 * (f - 32)) // "100"; 5.0/9.0 is an untyped float
``` ```
只有常量可以是无类型的。当一个无类型的常量被赋值给一个变量的时候，就像上面的第一行语句，或者是像其余三个语句中右边表达式中含有明确类型的值，无类型的常量将会被隐式转换为对应的类型，如果转换合法的话。 只有常量可以是无类型的。当一个无类型的常量被赋值给一个变量的时候，就像下面的第一行语句，或者出现在有明确类型的变量声明的右边，如下面的其余三行语句，无类型的常量将会被隐式转换为对应的类型，如果转换合法的话。
```Go ```Go
var f float64 = 3 + 0i // untyped complex -> float64 var f float64 = 3 + 0i // untyped complex -> float64