go的常用数据类型-持续优化篇

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1. int类型

var a int = 123

var a int8 = 123

var a int16 = 123

var a int32 = 123

2.float类型，不定义默认为64的

var b float32 = 1.1222221      //32和64位数申请的内存不一样

var b float64= 1.1222221

3.字符串类型

var c string = “hello”

4.数组

var a = []int{1,2,3}

5.二维数组

var a =[][2]int{{1,2},{3,4}}