C# Quine Problem
I am trying to understand how this piece of self-replicating code works (found here), but the problem is I can't get it to run as-is:
class c {
static void Main(){
string s = "class c{{static void Main(){{string s={0}{10};System.Console.Write(s,(char)34,s);}}}}";
System.Console.Write(s,(char)34,s); //<<-- exception on this line
}
}
It's throwing an exception on writeline: Index (zero based) must be greater than or equal to zero and less than the size of the argument list.
Can someone help - in particular about the formatting option {0}{10}?
I got it working like this (see below) but it's longer than the original - I am curious how the original could have worked as-is in the 1st place:
class c {
static void Main(){
string s = "class c{{static void Main(){{string s={0}{1}{2};System.Console.Write(s,(char)34,s,(char)34);}}}}";
开发者_开发百科 System.Console.Write(s,(char)34,s,(char)34);
}
}
I think there is a pair of braces missing - instead of {10}
it should read {1}{0}
.
class c {
static void Main(){
string s = "class c{{static void Main(){{string s={0}{1}{0};System.Console.Write(s,(char)34,s);}}}}";
System.Console.Write(s,(char)34,s); //<<-- exception on this line
}
}
Could the original work with?
s={0}{1}{0}
I believe that the original was supposed to look like this:
class c {
static void Main() {
string s = "class c{{static void Main(){{string s={0}{1}{0};System.Console.Write(s,(char)34,s);}}}}";
System.Console.Write(s, (char)34, s);
}
}
I.e. the {0}{10}
should just be changed to {0}{1}{0}
.
The {0}
in the format string is used to put the quotation marks before and after the string.
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