C # Special error locating Mechanism

Bool checked;
... 1

Public static void main ()
{...} 2

Int matched = symbol. Match (input) 3
If (matched> 0)
{
....
}
Char optional = "? ";
String theory = 'compute'; 4

Int matched = 0_or_more (symbol );
... 5

Error in code segment 1st: checked is a keyword
Error in section 2nd code: Not main, but Main
Error in code segment 3rd: The variable declaration statement does not have a semicolon www.2cto.com
Error in code segment 4th: The character value must be enclosed by single quotation marks, and the string must be enclosed by double quotation marks.
Error of code segment 5th: The first error indicates that the identifier cannot start with a number, and the second error indicates that the identifier cannot be used as an underscore.

Author: ershouyage