Does C# support if codeblocks without braces?

问题

How would C# compile this?

if (info == 8)
    info = 4;
otherStuff();

Would it include subsequent lines in the codeblock?

if (info == 8)
{
    info = 4;
    otherStuff();
}

Or would it take only the next line?

if (info == 8)
{
    info = 4;
}
otherStuff();

回答1:

Yes, it supports it - but it takes the next statement, not the next line. So for example:

int a = 0;
int b = 0;
if (someCondition) a = 1; b = 1;
int c = 2;

is equivalent to:

int a = 0;
int b = 0;
if (someCondition)
{
    a = 1;
}
b = 1;
int c = 2;

Personally I always include braces around the bodies of if statements, and most coding conventions I've come across take the same approach.

回答2:

if (info == 8)
{
    info = 4;
}
otherStuff();

回答3:

It works like C/C++ and Java. Without curlies, it only includes the next statement.

回答4:

Yes, it supports if codeblocks without braces, only the first statement after the if will be included in the if block, like in your second example

回答5:

In C#, if statements run commands based on brackets. If no brackets are given, it runs the next command if the statement is true and then runs the command after. if the condition is false, just continues on the next command

therefore

if( true )
    method1();
method2();

would be the same as

if( true )
{
    method1();
}
method2();

回答6:

Of course "if" only works for "info = 4".

回答7:

It only takes the next line, so your example would compile to the second possible result example.

来源：https://stackoverflow.com/questions/4345867/does-c-sharp-support-if-codeblocks-without-braces