8.6 Statements

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博客介绍了C#大多语句直接借鉴自C和C++，还有一些新增和修改。列举了多种语句类型，如语句列表和块语句、标签语句和goto语句等，并给出了每种语句的示例代码，涉及局部常量声明、局部变量声明等。

8.6 Statements
C# borrows most of its statements directly from C and C++, though there are
some noteworthy additions and
modifications. The table below lists the kinds of statements that can be
used, and provides an example for
each.
Statement Example
Statement lists and block
statements
static void Main() {
F();
G();
{
H();
I();
}
}
Labeled statements and goto
statements
static void Main(string[] args) {
if (args.Length == 0)
goto done;
Console.WriteLine(args.Length);
done:
Console.WriteLine("Done");
}
Local constant declarations static void Main() {
const float pi = 3.14f;
const int r = 123;
Console.WriteLine(pi * r * r);
}
Local variable declarations static void Main() {
int a;
int b = 2, c = 3;
a = 1;
Console.WriteLine(a + b + c);
}
Expression statements static int F(int a, int b) {
return a + b;
}
static void Main() {
F(1, 2); // Expression statement
}
if statements static void Main(string[] args) {
if (args.Length == 0)
Console.WriteLine("No args");
else
Console.WriteLine("Args");
}
switch statements static void Main(string[] args) {
switch (args.Length) {
case 0:
Console.WriteLine("No args");
break;
case 1:
Console.WriteLine("One arg ");
break;
default:
int n = args.Length;
Console.WriteLine("{0} args", n);
break;
}
}
while statements static void Main(string[] args) {
int i = 0;
while (i < args.Length) {
Console.WriteLine(args[i]);
i++;
}
}