A C # "class/struct/enum" definition does not require a terminating semicolon.
public sealed class Hiker
{
...
//No; it's right.
However, you can use a terminating semicolon but have no effect on the program:
public sealed class Hiker
{
...
}; Yes, it's OK, but not recommended.
In Java, the definition of a function can have a trailing semicolon, but is not allowed in C #.
public sealed class Hiker
{
public void Hitch () {...}; ; it's not true.
//No; it's right.
5. Statement
Declaration is the introduction of variables in a block
U each variable has an identifier and a type
U the type of each variable cannot be changed
Using System;
public sealed class Hiker
{
public static void Main ()
{
int result;
result = 9 * 6;
int thirteen;
thirteen = 13;
Console.Write (Result/thirteen);
Console.Write (result% thirteen);
}
}
It is illegal to declare a variable: This variable may not be used. For example:
if (...)
int x = 42; Compile-time error
Else
...
6. Expression type
The expression is used for calculation!
W each expression produces a value
W Each expression must have only unilateral effect
W each variable can be used only if it is assigned a value
Using System;
public sealed class Hiker
{
public static void Main ()
{
int result;
result = 9 * 6;
int thirteen;
thirteen = 13;
Console.Write (Result/thirteen);
Console.Write (result% thirteen);
}
}
C # does not allow any one expression to read the value of a variable unless the compiler knows that the variable has already been initialized or has been assigned a value. For example, the following statement causes a compiler error:
int m;
if (...) {
m = 42;
}
Console.WriteLine (m);//Compiler error, because m may not be assigned
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