Learn Golang in Day 4

Learn Golang in Day 4

大纲

• Go语言运算符
  • 算术运算符
  • 关系运算符
  • 逻辑运算符
  • 位运算符
  • 赋值运算符
  • 其他运算符

算术运算符

package main

import "fmt"

func main() {
var a int = 10
var b int = 20
var c int 

c = a + b
fmt.Printf("%d + %d = %d\n", a,b,c)

c = a - b
fmt.Printf("%d - %d = %d\n", a,b,c)

c = a * b
fmt.Printf("%d * %d = %d\n",a,b, c)

c = a / b
fmt.Printf("%d / %d = %d\n",a,b, c)

c = a % b
fmt.Printf("%d mod %d = %d\n", a,b,c)

c = a
a++
fmt.Printf("%d++ = %d\n", c, a)

c = a
a--
fmt.Printf("%d-- = %d\n", c, a)
}

关系运算符

package main

import "fmt"

func main() {
    var a int = 2
    var b int = 12

    if a == b {
        fmt.Printf("a == b \n")
    } else {
        fmt.Println("a not equal to b")
    }
}

逻辑运算符

• &&,||,!

  | 运算符 | 描述 | 实例 |

  |--------|------|------|

  | && | | |

  | ! | | |

位运算符

|

指针运算符

• & 取地址
• × 指针变量

package main 

import "fmt"

func main() {
  var a int = 4
  var b int32
  var c float32
  var ptr *int

  fmt.Printf("a 的值 %d\n", a)
  fmt.Printf("a 的地址 %0x", &a)

}