June 21, 2022: golang multiple choice question, what does the following golang code output? A：3； B：4； C：100； D: Compilation failed. package main import ( “fmt“ ) func

2022-06-21：golang choice question , following golang What does the code output ？A：3;B：4;C：100;D： Compile failed .

package main

import (
	"fmt"
)

func main() {
    
	m := [...]int{
    
		'a': 1,
		'b': 2,
		'c': 3,
	}
	m['a'] = 3
	fmt.Println(len(m))
}

answer 2022-06-21：

Answer selection C. The reason is that ’c’ Of ASCII The value of is 99, Slice indices 99, Slice length must be 100 And above .

The operation results are as follows ：