using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^((?:\S+\s+){4})";
string substitution = @"${1}0 ";
string input = @"EE84 1484.74 1364.99 62.5 2 1 0 1
EE85 505.23 841.63 60. 2 1 0 1
EE86 945.95 913.39 100. 1 0 0 0
P3 972.44 1126.12 100. 1 0 0 0
P28 980.0 1119.0 100. 1 0 0 0
P100 964.03 1125.93 100. 1 0 0 0
P102 963.49 1133.71 100. 1 0 0 0
P106 974.06 1150.73 100. 1 0 0 0
P108 1017.36 1062.47 100. 1 0 0 0
P109 965.31 1151.14 100. 1 0 0 0 ";
RegexOptions options = RegexOptions.Multiline;
Regex regex = new Regex(pattern, options);
string result = regex.Replace(input, substitution);
}
}
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