map.md

# map的初始化
下面代码运行是否会报错？

```Go
func main() {
    var employeeSalary map[string]int
    employeeSalary["steve"] = 12000
    fmt.Println(employeeSalary)
}
```

## 答案

报`assignment to entry in nil map`

## 选项

### A

输出 `nil`

### B

输出 `map[steve:12000]`

### C

输出 1200