func funcs(n1 float64, n2 float64, operator byte) float64{
var res float64
switch operator {
case '+':
res = n1 + n2
case '*':
res = n1 * n2
case '-':
res = n1 - n2
default:
fmt.Printf("输入error ！！\n")
}
return res //返回函数计算结果
}
func test (x int) {
x = x + 1
fmt.Printf("x=%d\n",x)
}
func main() {
n1 := 3.3
n2 := 3.9
x := 10
var operator byte = '+'
res := funcs(n1,n2,operator) //接收函数计算结果
fmt.Printf("计算结果等于: %.2v\n",res) //输出计算结果
test(x)
fmt.Println(x)
}
