C#中checked和unchecked关键字
checked
在checked代码段中,如果里面执行的是比较危险的代码,则会引发相关异常或者错误,例如:
static void Main(string[] args)
{
checked
{
int n = int.MaxValue;
Console.WriteLine(n+1);
}
}
Unhandled exception. System.OverflowException: Arithmetic operation resulted in an overflow.
at DemoProject.Program.Main(String[] args) in C:\Users\Yihao\Desktop\FZ\DemoProject\DemoProject\Program.cs:line 12
Process finished with exit code -532,462,766.
checked块的代码在运行时发生赋值溢出将引发异常。
unchecked
C#还提支持unchecked块来强制不进行溢出检查,块中溢出的赋值将不会引发异常,例如:
static void Main(string[] args)
{
unchecked
{
int n = int.MaxValue;
Console.WriteLine(n+1);
}
}
-2147483648
Process finished with exit code 0.
标签:checked,C#,args,int,Main,unchecked
From: https://www.cnblogs.com/lilyflower/p/18008616