Study Notes (51): C # fast entry - four kinds declare an array of ways

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1. The four kinds declare an array of methods

method 1:

int[] num1 = new int[10];   //使用new运算符声明数组，确定了数组的类型和长度

Method 2:

int[] num2 = { 1, 2, 3, 4, 5 };     //声明数组时直接初始化，但要知道类型、长度和值

Method 3 (error-prone is not recommended):

int[] num3 = new int[4] { 1, 2, 3, 4 };     //要已知数组长度、类型和值

Method 4:

int[] num4 = new int[] { 1, 2, 3, 4 };     //要已知数组长度、类型和值

2. Statement of type string array values ​​to use enclosed in double quotes, each value separated by a comma

string[] strArr = { "hello", "world", "nihao" };

3. If the array index does not exist, there will be subscript out of bounds exception