using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^(((&&|<=|>=|<|>|!=|==|&|!)|([-+=]{1,2})|([.!?)}{;,(-]))|(else|if|float|int)|(\d[\d.]))";
string input = @"int a, b, c;
float d, e;
a = b = 5;
c = 6;
if ( a > b)
{
c = a - b;
e = d - 2.0;
}
else
{
d = e + 6.0;
b = a + c;
}";
RegexOptions options = RegexOptions.Multiline;
foreach (Match m in Regex.Matches(input, pattern, options))
{
Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index);
}
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx